{
  "manageEntity": {
    "action": "Save",
    "entityId": "1691310391",
    "entityType": "Track",
    "nonce": "0xd96b5e80f14299654d63d628a974226ae6d0ef49a0fac863acac3c7df9598ba2",
    "signature": "0xd9aa5090ddf5c4655ba7bb52f0e7a62f0ff49e44a732ba7184966570027e35e05c455631c337a0da10c162f33e44e03c6865d521acc682b41cf14d96cecda23d1c",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}