{
  "manageEntity": {
    "action": "Update",
    "entityId": "754168227",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5dcf292bed7d4116812d5aeb77ad692463ca290ad1ffb372a62390a370b502a7",
    "signature": "0xba7d3f85f89c4dba9cd811316365bbf3f1f54c04446b3cff53349ab5cf399aa649d3b6821603173e751709864f7e6a21f4eae151c86bcc1713e2bc3e858276c31b",
    "signer": "0x9C272d975b8a58D6730117A600Ad9254EaBB1be3",
    "userId": "754168227"
  }
}