{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1de32e3c3a91d54ff0920df42b9489b53ebf6d8f19e8cf400c4131cad60cfe31",
    "signature": "0x3dc4a918c15f2eb27fe1ac505992c05a9b3961e49bf776ddaaa30885cb32e57a71ba097ee06520bdcb48518b5742fb48f27d0c2c3c4146cb202a89ecfd3fb42f1b",
    "signer": "0x146321845f97E5e0187Fde03339E7D034d427Ec8",
    "userId": "769256708"
  }
}