{
  "manageEntity": {
    "action": "Update",
    "entityId": "353355636",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf85bbf652686e0acb3ab35b8f6dca271b52cbba069d1d1b894de196f6d3ec6bc",
    "signature": "0xc3053155421c67945cd5f262eb1ffc4ad95ee15ba5094d5e5d4a499f64a4ea134104712c26d4ab1e40456b966159034714124697608206576d9d35fd12fdac2b1b",
    "signer": "0xE86d9b1B6A3FC11F5E92fD55a438137361f97229",
    "userId": "353355636"
  }
}