{
  "manageEntity": {
    "action": "Save",
    "entityId": "1836377196",
    "entityType": "Track",
    "nonce": "0x7b0ba99a20e5618049c94c496107e111c162d2cbf0f8be1585a6335a418128e8",
    "signature": "0x773fde09b0f1cfa804c3d4f42e5fbcbbdd2f2cd88c377a096c9e8ba3c19fb122405b187d291f509992966363b855946b74b537ac98673d327e1ef7ae10b566fc1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}