{
  "manageEntity": {
    "action": "Save",
    "entityId": "1055553068",
    "entityType": "Track",
    "nonce": "0x7b752eca0c835873343df1011edc44e589b00cee4068a0eccebf452b124d55da",
    "signature": "0xd110a8fca50f176837b05114349a23b9e9763999c8285221bf0eb3b4d77012f06443a86e80807fd65741d9ba0233090324f6e9f47e5f38a82dcc4a7ab38d627b1b",
    "signer": "0xc03cf24b1C519dA6a18B6509c7F5C57d01620755",
    "userId": "870665506"
  }
}