{
  "manageEntity": {
    "action": "Save",
    "entityId": "1982708278",
    "entityType": "Track",
    "nonce": "0xb08c9bd6ef0e87f92a2c0de3fe5a716aaad1690f60578107419b0768fcf0951e",
    "signature": "0xbe3e6597259b596dec7bc973840d279b80ad63986c365c0cf51056ff12fd4bdc0ff213dc050a5f07eb4233ddf908f1a65be81f2542d14fc30d4c703a291997901b",
    "signer": "0x48a006fC89FEf065AAB7A5769519625870833CC6",
    "userId": "128172"
  }
}