{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16831",
    "entityType": "User",
    "nonce": "0x0b1cc33e918ecc5b03b3420b3e193f2af3487ad03dc582fee522ac95e599368e",
    "signature": "0xb3c0d4f8da01265aadb52274eebfd0ba9da578e627f9355648d0050c1f36eb2c3f22c14a20a3488cb84ca8763fd98f99ad442817d010f18cd6be7810a9de460f1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}