{
  "manageEntity": {
    "action": "Update",
    "entityId": "497438937",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0811ca652b26fd81758c2ca22b826891e5ccc4c0eea13f6429c5c7f7933ae399",
    "signature": "0x4233f3c2b9fffa595021be97691abaf645e4e4b44351875dad4d922e1f5cffbe7a9d8feb35302ef6cbbdd9ad87699149fe1b86fd8352cfc78ec298f6aeffc0ff1c",
    "signer": "0x7f20C9b39E77f853A78624cD079bdDcE710cB5B2",
    "userId": "497438937"
  }
}