{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "224477",
    "entityType": "User",
    "nonce": "0x1eb2519a5171b13e91e78bdda43764ee38d7acabdd060db340f7795f89cad9d4",
    "signature": "0x6716f530164596d20b91b6ba0d983cd10e365b97c42404781aebb8f925d2f086564e80b76bb0e724cadec66cf613e7d1004338ada158c797e8108c8a3e7abcfc1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}