{
  "manageEntity": {
    "action": "Update",
    "entityId": "901483974",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x36fbe126e2ec8f6e44e1858c1eb7dfc06a4317f487e213a982b77da659396d91",
    "signature": "0x7e2ab2443dd5772172c98a17e03a543fdc9fcb4230a195499f93963b3ba6361455915d9e327b861e7a4f4c1aad1b29812307fbf3c644ae48b9487f12e27d71b91b",
    "signer": "0x0FFf69aAa5C477973508e64c5cC9E5948d1Dc65a",
    "userId": "901483974"
  }
}