{
  "manageEntity": {
    "action": "Save",
    "entityId": "270127111",
    "entityType": "Track",
    "nonce": "0x9dc4edd326e8bbff67ae89d8fd09ea3ce410b7e54a998803515b0f5f1188fbb1",
    "signature": "0x06719f962a8c0fa6f1b338ad23265e214d14d9aa9afa2f0fa869dd760760a4274c1341c3f5b652c642e001cac9f150ffa1cb9a2e5ae192cb9579f79dbe2fba6d1b",
    "signer": "0x811B619477Ea800Cc8e7fDd08cEA323eC3E06411",
    "userId": "791433195"
  }
}