{
  "manageEntity": {
    "action": "Update",
    "entityId": "747676740",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8c0bd07ddebbaab8727015484f40adf8e60d9c5207ad710424bb86c847094b2d",
    "signature": "0x6eded31c4ca5b38df51ff92f8c68dd523c6daa0f54bbd053a8101402fa4060da443e8ef804db3c7b89694dad768e8695cbc01a42605bdc053eeb2dd81f097f801c",
    "signer": "0xAaC78cb31D6936b7f0E936C8550Cebc27d072b1f",
    "userId": "747676740"
  }
}