{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12220",
    "entityType": "User",
    "nonce": "0x5d8a6f4aae110701697ea9f85ac3836ab2c1c536f26f9ecf3b372eb18969c354",
    "signature": "0x5ea97db3c68c09fad469c81af77b25968ec1cff9b9c4d3e7c5061f90b5d338637cb1ff5359967a32f1498a8b96ff62e6524ab9a786813acf64fb2e49c7aea75f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}