{
  "manageEntity": {
    "action": "Update",
    "entityId": "504552907",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieravbhkzja7ppjtxsnr2xv4txijsom4vrpv2ukhgwcp73uv2xaxicyq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":514612518}]}}}",
    "nonce": "0x44d77df76df8bfd7dfe58574cf91f6cba1425037d891946e29bb1b040e4c11d0",
    "signature": "0x16fd086b5533acd432b34e9431e9faa94edec970aad6973f05e1b33eae3ff7336b2ca2e4b616e0112bb76b5ab6d32b22601067d43c9502fccb1eff2e11f3b1041c",
    "signer": "0xD37b1C27752eF147a8b887Bf5F0FbE628dB0ddEC",
    "userId": "504552907"
  }
}