{
  "manageEntity": {
    "action": "Save",
    "entityId": "1636563603",
    "entityType": "Track",
    "nonce": "0xa55c32ba296a539bf84024a9fa9f805fcc1d8ffa2892c3efacb17091ed8e4319",
    "signature": "0x2026217f56a28873317fd1b957939540a64a3147d1167a6d7222dbdbda75047a7b7fe114a32f2ae2dae1abd30e1d9c944bae9b17e50dc67f54f563656d155d5c1c",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}