{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12749",
    "entityType": "User",
    "nonce": "0xc8689753a468f04983530bbe70283d28467507b7a4db39f5032cf657bc38e1b6",
    "signature": "0xcbc63e68c7e41ddfff43f835d910673aa4719004ddf4c8e6808560e718b8f45365dd3013887d474e1ab5fc6651f82d1dbaf6e3690df615a86cc6513ab702633a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}