{
  "manageEntity": {
    "action": "Update",
    "entityId": "473911971",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x65f8aec4bd68f13362b2903e88c8119ae355b205d75b971784bf92c10e49d045",
    "signature": "0xe2e033a23276371161b9645b8a039546ad2f58166d0561fdf57cdad8aee8771b2795435f0587fc2c57e1fdcf85969954bef94859da9ffe65dec3ef2ec62cba001b",
    "signer": "0xfffF643204D053ae5bFC296Aa20F15313084C719",
    "userId": "473911971"
  }
}