{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "856877663",
    "entityType": "User",
    "nonce": "0x77d827b8c74cb15dfeb414f30b8796a19b245d9a8f1cdef396862c35d6ea0fad",
    "signature": "0x5b5e279ea25d519884c84d20cd707cf5ab65bb168554108a13538f1ed70c11302fa45e83fa38662f2acf012c147be721912c67685f4bc2253a74185831eb2d051c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}