{
  "manageEntity": {
    "action": "Save",
    "entityId": "164904024",
    "entityType": "Track",
    "nonce": "0xee35bcbbbc530c11d4a44b6d9326260fa3d03733dd482dd47d9d9e4ee32e3336",
    "signature": "0x9eabe3f7a4de583e6a9ff6ace328392f3e8a4be40e69bfdb9396f7032eb0b51d13c59b931dad93586df84469569736a7df40a42a0281b654c8c095c683fadf411c",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}