{
  "manageEntity": {
    "action": "Save",
    "entityId": "2094608640",
    "entityType": "Track",
    "nonce": "0x3e8a94db964a65732bd08696363544d48423f8221fff3cfee837a6c52f8a2948",
    "signature": "0xeff9e3febcf132fcd0f283ea46f96075efde3ca2049763cfedc17654dbca6aba06ee9bc16c8910e7815b6f66f9ecf81cfce18bcd1ed9fb9a9fa5415ca9e8a18c1c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}