{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8707ca8bcd139fed0828209f05554f358011169b69f798e87977e103a2b942d8",
    "signature": "0x411af860d1e63413f2f39e44834a035381431e7f842ab1e7b6ea54beefd3b7b27fc827bf4be8bda05e3ec3d15db82b285b5ab7c5b4885fd4d679f9427880667e1b",
    "signer": "0x9F139F9437bb6CA49599aD76d3c2AF7dEfAd2c2B",
    "userId": "795515751"
  }
}