{
  "manageEntity": {
    "action": "Save",
    "entityId": "1699355626",
    "entityType": "Track",
    "nonce": "0x53ab354bc070c0c9d7cbf3fcf249bc6b56d5b349d727d0f76ca4ec99e5c024e8",
    "signature": "0x03b086b83b00a7347536bb32e01eee014d20f9ae07837ab15d7b9624a7adec3616ad845548820ec5659cc9048aa10558bd953e4cb136ce8ca484b91d4419812f1c",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}