{
  "manageEntity": {
    "action": "Save",
    "entityId": "1000152061",
    "entityType": "Track",
    "nonce": "0xfcb9e27d2fdcad401987fd640b84acd25dc9aa7731c7167f5976e8b3111199ef",
    "signature": "0x5e90dede8de1d43555a9a6cbbf7aa321ac99eec7c400011a50cb488be1f925142c4861e3ab96d4efe280666ee235ee09c243f1312ee84b56bdff5795f1bf5e261b",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}