{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x64e0446016b02c551392a24f891be2557c7c265da02cb11e4379812f405f71c0",
    "signature": "0x1a1b86cba5237e919eb166da6351905bfbb53d22c34932d90edc486d989690834293d59f3fe68c28c857e811efa73ba3b6e1979f408e7ed42f0d2e4e0f9edd581b",
    "signer": "0x4611Dec6A3065fb4F7A23A8F14C1c300A8Eec7C6",
    "userId": "650714154"
  }
}