{
  "manageEntity": {
    "action": "Save",
    "entityId": "193269",
    "entityType": "Track",
    "nonce": "0x50a50d0bde0364dc1f58da9604bd627fb874226c9c48db6db9b906bca342dfb6",
    "signature": "0xbbf8d0e466d466cbb5a5fff3e3a4166e37f23b08f0490cf1a478e7d587889e5441bd9eda9291419d0e4d77dd9f962e5d0f67b236107ae89a3c498286572b35041b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}