{
  "manageEntity": {
    "action": "Update",
    "entityId": "561696502",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xddf6b65cda610546b9b076ccb6c4d4922fb3f178fa06b8ebd7dcac30d8888d9f",
    "signature": "0xbbf497efda48e23c55cc02ff1ac90af1e2116eb73029221d804236a9f80b04d37bfc6c381cfbe27f005558df48562c160fb4027fbb756bc29f7816524be76bad1b",
    "signer": "0x7c9eeADD59fb6214e81cD9555b456F0F1F5d1fF6",
    "userId": "561696502"
  }
}