{
  "manageEntity": {
    "action": "Save",
    "entityId": "2011565903",
    "entityType": "Track",
    "nonce": "0x5f7e1b6cc0f296630bca6db423c795c83addab030b226ead2a11b6aed91ebc92",
    "signature": "0x0543d1ff9d629fbc5cc42bbaf3ad31cdf8786f58dd45ae2bfcccb2eb9810834b353ca1c1cea58927875bc4fa1a372350a7a643b3d19900e617a4877b32ca275e1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}