{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320356",
    "entityType": "User",
    "nonce": "0xb874159641eb2810e4c431da7506704389ac84b1b4f5e889e773e0f3f78c9fba",
    "signature": "0x0124b231bf1f5ec6bed8dfee305318637011a1c68694abe26963f938cbb865ae739feb05a68ba5a6024f32f0a8c44d117512c039db46856e8a552f60aa4c7dad1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}