{
  "manageEntity": {
    "action": "Update",
    "entityId": "508931608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9591ababc5818d3821e97532f3850b59c254e2ca0285481969106c05c7aefa5a",
    "signature": "0x2246060be690fd4e1406b696aac890b9f06e4889913d40ad47e193e1268b1a1f076c83f5851815ca567311b212e3a33d1c1fdcab587bfdcba513a1789930e5071b",
    "signer": "0x69163Aed5B32EC7f6C8a1e4aDEd7fD7E298F9521",
    "userId": "508931608"
  }
}