{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x77625d51c5476df1574022f7108e7be298e65ee593226f2735fbfea091624a35",
    "signature": "0xa05d68ae6408832a1961b11e0cba0053885b5255091b3bea140385f8c268ed2a1700b0f787097eb0a4be5e7bcdd03ea0c2d27fba19308c828638f6857cd640dd1b",
    "signer": "0x1A8252Ff66942bF960FCc7c8806FebcB9156bA63",
    "userId": "521472352"
  }
}