{
  "manageEntity": {
    "action": "Update",
    "entityId": "242383900",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x678b513d2a5c69269536e44af80fc6af92c8f3b6017f652cf54d030082bae96e",
    "signature": "0xa75f1ff4df54cc4e9adf83db01e9f39a1211254d00b442bc1f86edfbf78a1f81671d25602a2b99e729e716f2e1c91d97d09a1503b7edd21fa7350a94449ed2f91b",
    "signer": "0x7fB5583bE868841A3432399E5727D0A9c7FCF65b",
    "userId": "242383900"
  }
}