{
  "manageEntity": {
    "action": "Save",
    "entityId": "1792649566",
    "entityType": "Track",
    "nonce": "0x77ee8f798ec73a60780bfeb6233f1ec5ee5b2a5ca941c245d3a4ff340cc6d925",
    "signature": "0xec4a5989fd9cf1eccf5247c688b76dd871d914eef64b3232061829b4606105a17785745d23bedf9eb09c8290a464be02aacb0c2c30443a9bf6bdf83ffb9007d71c",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}