{
  "manageEntity": {
    "action": "Save",
    "entityId": "25347",
    "entityType": "Track",
    "nonce": "0x1f5c43265f89d4596c27ded6a89ecbf699b2affe580df0ff44c9499913b8ea1d",
    "signature": "0xacdbf3a3a4d0a22cad3a007e902a297239ea9d772d93342c4aa509f034ac348328898de1c6d6ee6941d6132bf276c1ec7ed139bd1d59bbaf7454e5d9019fc1641c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}