{
  "manageEntity": {
    "action": "Save",
    "entityId": "1309723482",
    "entityType": "Track",
    "nonce": "0x0aab360b13c711a1361f4d929d04157638216e4cf2eab5a1ec941e9d72d7b0f4",
    "signature": "0xbf3a9edcbc37ee5e76fdd2bda6b2a24c81464394df79a21cd7618cb94389c5122b5136f97ffb4daabe4f8675a11e481fdf0e16be1d0938b8349d2a2428a9a2191b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}