{
  "manageEntity": {
    "action": "Download",
    "entityId": "1453679518",
    "entityType": "Track",
    "nonce": "0x0b2bd4f12e30053d22c76fdc1ce8d58a5ebe4a76c39bbe66cad0f8447d55e512",
    "signature": "0xba6dff597931c84c5c9e8896ef4b24452de82ac43313bb636672a8b92d2f9b4425ba82371e469d37bf9f02a1931c85db0b0c9e09fe5e5739fdd10f1e1af03eec1c",
    "signer": "0x70c1d679EC220620b2553B33Fdae4fc9d7B4Cd64",
    "userId": "667541109"
  }
}