{
  "manageEntity": {
    "action": "Update",
    "entityId": "301200780",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa48fd419d9278497a2bb6732d877d178241515246b0e5af9121f691676235368",
    "signature": "0xe537456583d5daf1bb72e56094d64a27357df5762b6a7a1751847da93b7ec4224528a6e7b47034c4dd34953676b22f2e7ccbe9492121f5df92adf0b1ff17ba0a1b",
    "signer": "0x32F42bE033dFD910EF4621d8b2F9F35339d498cA",
    "userId": "301200780"
  }
}