{
  "manageEntity": {
    "action": "Update",
    "entityId": "887741865",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3c175c6d972db7819ec2438e8aca9d0531e802458ba981429cc7675bf8745e04",
    "signature": "0x2d00226f66f8043d80920ff4bfa969410bd4a0fe1d5d6aee9a39090a750d0a14237bc640f781145dc5f6b6d4cbf2844143562b3d0724d9608f9b55d69d90956a1c",
    "signer": "0x2230770EC85946F97685aDECD4b734f51662F050",
    "userId": "887741865"
  }
}