{
  "manageEntity": {
    "action": "Save",
    "entityId": "996706320",
    "entityType": "Track",
    "nonce": "0x92abc07bf653ae200e860a0849a48e3bedd10097944ae5561fc15dcad262ea1c",
    "signature": "0xde60927c62a7e01ece03873417aad7fe9c541aaf519874e80edb6c937111fdb02b2790a90b9d15fb5e0e4d86c282c36e46ad2ed5ef7275155069a574ea1e3ca91b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}