{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaf2f012587e6c112537f7ef054e5869ed74e3da4ea4264a86c6b34c2ebb1096b",
    "signature": "0xf282ee80fbfdcf06121807df2ba1bd5afdf5a5794d022e991a2b6cb430c258974288c5ae94aa0e472fd3e44ca8a7c9b6948eb0db66b95f2bf3e25400488cd2f91b",
    "signer": "0xaE2e898681Fc10Da7E8062C41BB7C992099C09fF",
    "userId": "742300699"
  }
}