{
  "manageEntity": {
    "action": "Save",
    "entityId": "1084397836",
    "entityType": "Track",
    "nonce": "0xcde09bf6c0254c38888a747f8cad562f6ccc135596193ef36d99917dcbd48c66",
    "signature": "0xc7e2dd63f2f6aed1d3df353cd289eed4605a973ae97d3af39d909d639af9c134117700dd4e256934b388ac0a108d2e91e7c1f21f5b9d9ee1fa0e45d58cf21bb71c",
    "signer": "0x67479063A246B10560F7FfC48Dba47268867417B",
    "userId": "745004514"
  }
}