{
  "manageEntity": {
    "action": "Save",
    "entityId": "119315",
    "entityType": "Track",
    "nonce": "0x201e095df75266d55fb47ff792cf33545bfa5124f330fc47c72bdc9dcb708b4e",
    "signature": "0xbfa0f733782ba1ca253ecf22f8c7afa75712207fd803869dd55e710ba1bf6a891dd9c58936cc4a04d4bc0190cd25a5f9479e6f7ea8a62a14f9c7622d31846db91c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}