{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6708205",
    "entityType": "User",
    "nonce": "0xf55af60485d50ca4dd4ceacbcda9ed1b0458bc5241bcd557442c9c78b9064860",
    "signature": "0x413bbf71dd1d131c9976c5f6e5e51da96193b3cecba8b2a2bf1dfc0b10e820ac32bb7628914d4d56c10211851042bc2c5b432df92c631442edde8bf0bd19122e1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}