{
  "manageEntity": {
    "action": "Save",
    "entityId": "1672241804",
    "entityType": "Track",
    "nonce": "0xe5d7908933aa4db9706b6ff7fec20387de5fdc4d32def1c5782ddb1405c13a1e",
    "signature": "0x6a130089162a09c0d875c396d7f5309134f7695293ff65f1be5985f1cd0398f20a4b8aac0231973aa9677c9d6f4f5425d49a8f475bfa3b230ab90b97c425e47c1c",
    "signer": "0x3df67dfC4e44eb904F21415Ff9d1c71d584c33ad",
    "userId": "180188"
  }
}