{
  "manageEntity": {
    "action": "Update",
    "entityId": "644767279",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd046ff5c56df84850e8bbfd2a54587f248178dd4690168bebb32e1200952f8de",
    "signature": "0xf3402647d9d6b74190d67b202afe64535f2df00642a7e76f2b90fbfa3f5dba916332c046533760b1f23dde73139f7a649b36e54ec3224365dd98f32e79c7f5b61b",
    "signer": "0xf6c9943016137F3054658e7E14F51B6d271aC325",
    "userId": "644767279"
  }
}