{
  "manageEntity": {
    "action": "Save",
    "entityId": "1451967152",
    "entityType": "Track",
    "nonce": "0xc8d05db6cfff2c0b3ca3fb25e184844e1c93273a970bf189bbd2cd81fb0824aa",
    "signature": "0x82ec0143f1938fc0ed5381b20a896f5260af7f4f07f2a614f07ac5a1eb2eabad551afa7dc09afe726682daa342c1ea21bee84cacc8023adc49e66d7b843eb0101b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}