{
  "manageEntity": {
    "action": "Save",
    "entityId": "119279883",
    "entityType": "Track",
    "nonce": "0xd3454cde224b80b82c6f32861d882c87056f2eed62ba150498997fa698ea9521",
    "signature": "0x2e7daa511a00bcf1314f58bd45d481a5746ed1878ae756874de1e698b0b4f68f64bb7a154724019973189e8b2cb46fd6050a7265f895dc34ae77588a0ce49b981b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}