{
  "manageEntity": {
    "action": "Save",
    "entityId": "1008619",
    "entityType": "Track",
    "nonce": "0xc0ab9eaefd912156b3fe28fa9fa859f335e147337f1167c5aa6df8961f1f41ec",
    "signature": "0x501186ca9b0189ae6122d0813ff9271ef9fe330e5682120692da492e2567c6366e1f077de86ebee84aa7102f598ff35e66481d1500201a2b27b967fd9b07f4521c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}