{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x817c5777fe317ddbff6c730f1759e09e538c0dc14f9d68c77e0e68ab14475806",
    "signature": "0x999ae8de8e3b8ff9a22adae5eeb1b75ea4ee672be7e2b512817fb61503e873e20ad4284580fa6f2b6df44d88f48162a56c72a7600dd7b85f726fa565fdbeabd91b",
    "signer": "0x0CAf3174350FC1C72257AaFfC55A740AEDA0F825",
    "userId": "130365748"
  }
}