{
  "manageEntity": {
    "action": "Save",
    "entityId": "954260016",
    "entityType": "Track",
    "nonce": "0x6ccfdc36237e12b555f328bd163beaa8417083b12fd3d87b458d24462a1adf33",
    "signature": "0x6a4afb7b1316b3bdf790155d86b735f31d30e56c42ddb351fb29399dfa87454e64fe4aa8bdcea6d8f8b4e8e94819fc672d76947f47091042580cde6c81b001831b",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}