{
  "manageEntity": {
    "action": "Save",
    "entityId": "1938329461",
    "entityType": "Track",
    "nonce": "0x0ba844baece29f2e2e09ec718e0a7f0951776ce97abec4067793bb05b06a51be",
    "signature": "0x7cde7e1cd9d964dbaebdbfa432ff62b069c164738f194d4688fef411cf00615e7a0faa9fc3eeeb3a9889d7e78a5e77d9dbf4a942919ae4bf198a85627a1a66e91b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}