{
  "manageEntity": {
    "action": "Save",
    "entityId": "951836885",
    "entityType": "Track",
    "nonce": "0x46779840ffcf739c57e112211d77c314ec7b15f9fa72d28dbf389cfc11b65205",
    "signature": "0x60a088a3843b2e3af88cefd3b72d5f3b59395c1a0d1dca8057c0b456b8e542d24ca0c3a5df5e207aeb8cf0d3339f98c2e79342e6b421117af87814ca317e5a4f1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}