{
  "manageEntity": {
    "action": "Save",
    "entityId": "218330528",
    "entityType": "Track",
    "nonce": "0xf51a6f54a8d2048f294a541eb58a3554621f4f475310d86f9d8353babe82e5b4",
    "signature": "0xbff8f18de7d926571cdab72a90120562e883dbbefd3a013cf75bae1b99a93fe925153f3925deaaa10d58ca689dc366f3c3471e427539355cedb80e42094b02d81b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}