{
  "manageEntity": {
    "action": "Save",
    "entityId": "432124270",
    "entityType": "Track",
    "nonce": "0xdb3716effe92d2f1e790d53baf925ceb8f08b2c9882a26467cc2713ca7193e8c",
    "signature": "0x5e79260aab2877f54eff2446c6693ef215b978500d381b385c62ce1556878766245060a82c0a09ecf99b088584e0b1a8f888acfbb67f2dde28123c452b93edad1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}