{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5009e493815e9d45632ef49251b9d0c1324af2011be77be0d7c26513b2da3f08",
    "signature": "0x49b8831fa54166c0e06e53dcd506358b092c3fcc165e98d3e4225e571821e9264db87c4d307f7d4a221e3364b4bc8a4cae1dbe35ce87bd345eaaebf19e2035381c",
    "signer": "0xF535A3cdf698C51814cA78f19811Af029a9EA74c",
    "userId": "402950320"
  }
}