{
  "manageEntity": {
    "action": "Update",
    "entityId": "823577399",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x38825c4356c330cb70d882bb935d5f9a2f7b0cab82f743f0e5b7a44a6bc25e3b",
    "signature": "0xd655e6b6c4fca33e79233d244cdccb4dc20402003c61da2f00ced1f3c12ee48129461722421612d56dfda83d125bd5d092e7935660465adc644bac21066b8afc1b",
    "signer": "0x66310c3C430B9B1A2eb38D9c85159554D3C9D4C7",
    "userId": "823577399"
  }
}