{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "153526542",
    "entityType": "User",
    "nonce": "0xe91c0abd75e6bf5cd60c4cee6dc97c81250bb7e69eddbb729634364574508f18",
    "signature": "0xecd280f51f986ff30ff29c8c94e72ca4c22a307252a1812ee94bc01bad6bdcb0436d28a5abc8b8ab905fa701f1e7a308bf041866d5a6ab7acfa57fd3af14ddbb1b",
    "signer": "0xE726D55D6940a70995Ce9D8aa1aCE76FC6f4f544",
    "userId": "285113781"
  }
}