{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf8a2e9f02ff46439d74af8ba84173cc42fb72db0b0ecfd1aacc09f7ed5b9ff91",
    "signature": "0x686a63be5b1a4522cfaae2ae8af4072b6de3c895d7fa946b8b427587ccaed7f73a3c3187cbddf4fe75fb4e8928e87a7ba938e9973cf8f614b047f09f980f56661c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}