{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "228814194",
    "entityType": "User",
    "nonce": "0x2cf21c68a27e3a4d3bcac470442b8d967024cd4255b94bb0190579f4cd375612",
    "signature": "0x31b36952b2396cc7fecca7eb0df0a7128f2ea03cdc5f9ea9432c6a3325d69dbe5e4df16ea5f96250034b0017e41c52ab0e4b2f65a548fbaba29d18fca806fb9e1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}