{
  "manageEntity": {
    "action": "Update",
    "entityId": "243887839",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierabzbnvmfe3jk4u3dpnih7yqjmybar6wqqog6hpofpocznlejsolba\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":1351803427},{\"type\":\"playlist\",\"playlist_id\":1582573507},{\"type\":\"playlist\",\"playlist_id\":1068121409},{\"type\":\"playlist\",\"playlist_id\":821830912}]}}}",
    "nonce": "0x5a46ba3859eb81563a40f15c5b582a60a5832c50e4c5dc98942779b6c60488f8",
    "signature": "0xee2824b4d50878f73577f5133c7a8071236d9e69712bf01d625a8a7d0c4d185679402ed76f515295bbc5a70ea8d11f27065dfa1a224e4fed63f08d385bc7e2cc1b",
    "signer": "0xFfbC9CB253a54E8c512BbB1640A30096b96c0623",
    "userId": "243887839"
  }
}