{
  "manageEntity": {
    "action": "Update",
    "entityId": "867710486",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1976d794038d9792cf926c191939246ff1645335e04dfc697fa6a88eafd8c2a9",
    "signature": "0x503dede16240119aa0cf38f36d45ec31291aaebf50eb3778c78578cf93f9eb36574fdd3c8ea070f93804783c5f2f87650b41165eb85b8adeff9d3301738eed5b1c",
    "signer": "0x5d38Cb184274A585dC79f62FC669Eca2c573005D",
    "userId": "867710486"
  }
}