{
  "manageEntity": {
    "action": "Save",
    "entityId": "1984565280",
    "entityType": "Track",
    "nonce": "0x1bdda1eb10b6dd6b0a4d9ac932069a029110d43fa887845746f85d0a50f408dc",
    "signature": "0xe1a6967ac34e1765dbe3a94b60d43e9f075ba93e2a7b858a8fbe54fa5174a3436c4430e82a779b28c2d7568407561313eb76f3b4d747bae47b008e9afb552cfd1c",
    "signer": "0x2F7db4C1AE3922aD0f32CEdED1870278dd17b64b",
    "userId": "467213409"
  }
}