{
  "manageEntity": {
    "action": "Update",
    "entityId": "300244455",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7zmkq5dvaevsnjdv6qufzv7m4x6xr7i74n3ne74s3tcq3ghxbtta\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":882171785}]}}}",
    "nonce": "0x0d6519e2c30bc589325dd0754f6d6d585c7560e558cddc6f5852138bd380888a",
    "signature": "0x11cfb19be5fdcfbbeede1ce775d6b00b6dc8e492323eb991b7e1d6637a672b563ca22eda1eecc5477fdb2ecd66706355dcacb7c69096338b5c571f41d2a48f4a1b",
    "signer": "0x441C597b79DaeaBA9eb0B8ccA068e23c5a7c5843",
    "userId": "300244455"
  }
}