{
  "manageEntity": {
    "action": "Update",
    "entityId": "778958725",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6fe11b8e5ff8e8d009739f5b6a43a376e176d8e720e3e5bb98113abccb214a2e",
    "signature": "0xcfd1c364ed60349bdc4976709ff0230b2c7e59a0354662d6c0ebca2c38c0ca796333991a2bde8ad300dd3b3972c8561683ad4b90b4852e94af70ada266fbab631b",
    "signer": "0x7be720f21FA36366e2b1a4d872d5237FA9f7999d",
    "userId": "778958725"
  }
}