{
  "manageEntity": {
    "action": "Save",
    "entityId": "2069169570",
    "entityType": "Track",
    "nonce": "0xdd5e6e8238d2e6f52a0ec1ac70da791805b2534157e5ca330a05fd5fe39c3c6c",
    "signature": "0x4b8183eb7d6bd29f16bd7a4c6f314d0895ba2a7a32d92dfe821afeedd3a1e37731f06fa770df3b06ef9c12bf60f1580df0f9bff719e7c93e09ac65333b736a7c1c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}