{
  "manageEntity": {
    "action": "Save",
    "entityId": "1871796116",
    "entityType": "Track",
    "nonce": "0x4ae8e9f7656a83fdbe41bd01ce1f39cb79c306c0625a6f87f71ba0d4cf5412ae",
    "signature": "0xa2143fa29c84a9fb5f4153d283df456c68666e37601b4b7aec8670f7244980791b3c1780a1d5314f15a2280efef3f1c65d66ba1b2fc10ddd04dc4d0a755a39231c",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}