{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa7b83f7b30ed19a6f5a0dc44b9430d1971bc2ee05c22a4070b29e6f36a5b3799",
    "signature": "0xed65e6b59edfebd24f4843dced7d816179a5faa78f418a306ccbc3a73395cf023a152a8422630b91d829037d4e42996f3933f0ba0c8242949ce9e2debc63342b1c",
    "signer": "0x7e69d19e74b6EaAE2364C5642760289C74276992",
    "userId": "489589666"
  }
}