{
  "manageEntity": {
    "action": "Save",
    "entityId": "333588227",
    "entityType": "Track",
    "nonce": "0x68badb279503e961299994c6558777d7451b496490428cdc2fb7481d517c89d9",
    "signature": "0xd38952590544171f4a646352d3e007286a7e6ecf6ff87385a3d6437e9e816260786846ea88ad398346727b8a702c3cc336fa2010684206e3e9e921b6ab1e95de1b",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}