{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc89c6410d7c4b4e2dd3915fa4f9e964a5087a81baf33f5a6b09a362d5d78d6f8",
    "signature": "0x34169bef63beb2e3d24bdfc9dbb490b6fba3509813f246e73d3a7f77ca765fbf131f8b481ddc39cc44a8848c48c10dcb1533b0bd1dad1d8a9cb64b069fc4b2b51b",
    "signer": "0x9992190b899BAd1Aa34491C3c24e678200638202",
    "userId": "159384638"
  }
}