{
  "manageEntity": {
    "action": "Save",
    "entityId": "2077579810",
    "entityType": "Track",
    "nonce": "0xb2f24ca335eba62fbaaae755a0990109834cb1ff83afe75fc909cfab50bc274a",
    "signature": "0x50a5ac7cb397ccde57df13a79dc20867abc61bd2268e7761464661a64d2c9008476a505f2a1af4d082d0de9de8061874e5ea7f8e66a113b22640f08e02e8ecd51b",
    "signer": "0x5156122E7f53a879786546b3133306b9F7814b9b",
    "userId": "781663071"
  }
}