{
  "manageEntity": {
    "action": "Save",
    "entityId": "1034789",
    "entityType": "Track",
    "nonce": "0x85a95954d4efe4b4064959c9f566e9824d8c791ca9df06378c877df99e29c238",
    "signature": "0x79674a96a6e37468e0b61c8d3721e9c26d96fc7413d60350f0ed658d34c26bb666ae54914dcbc1c4cd5122b2acf4208b4b3f80f61ff6efe7aa3177c4ea3701201c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}