{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x872a433a427ecb4697f330fe1998ed5b03bd98f7584dd4a425ccbdb981b6cd28",
    "signature": "0xbdbf9f831549d911316a2cd4bafd983dc619a7fbb1d6461451128710904f6fa929367bea1aac797f05872061f97513a2e93cdbf247fcb6318ca0768658b12ded1b",
    "signer": "0x1879513acaaeE1B0980750886f962A71E9f74e05",
    "userId": "915757474"
  }
}