{
  "manageEntity": {
    "action": "Update",
    "entityId": "519198051",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xecd5427b7a6278fb69a3fca278377abec00b7409baee057ff4d86a8347979c65",
    "signature": "0xd94911a4a0bc68a2cd40dad92297193ba4e9c0ced80e9d95e716a5374fb9128d21037e82f595cf4c078ae58effcaa4b6c3b9eae907bd54139d4b89b9af9685661c",
    "signer": "0x6b41C0257860c766D288f3A5CAC12beA1F995686",
    "userId": "519198051"
  }
}