{
  "manageEntity": {
    "action": "Update",
    "entityId": "488405658",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x09d25ea32e7c78ef4822538ac561b38633ba402488a90276dbfa87642f88d643",
    "signature": "0xef2c89b8c55fc1d336df474dc721d84ac0f15f77fc28426924276a869d3f55be431ca7fb8fda2348d634bf705971a31defa18e76fd1fe07327041802df5ebfec1c",
    "signer": "0xdCd646a0cD0410890c4847Dd128D4Ad1D37D20d4",
    "userId": "488405658"
  }
}