{
  "manageEntity": {
    "action": "Update",
    "entityId": "336915550",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa3e71a8e857e7d7f1ac83f0d9cb52db399ed1c2cb36a435bab6dafe444b39606",
    "signature": "0x9040ce391603f775d4f638b0c0d50b82cf33c5961cbc1e4949e33d729f048be840fb34decb860b953e19b4c5ec9d675d68d2006f579ea015941c0056a7d334441c",
    "signer": "0x56ef43552A6856B68086824B4D604c27ff6040B5",
    "userId": "336915550"
  }
}