{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "424142613",
    "entityType": "User",
    "nonce": "0x3369203df76a20216dcc16f17b3b57c92f9ab8e4b8c7e57a16c4363c45d19961",
    "signature": "0xe8d403bdfa4700849b80c1e7b2093d5b8c9c3a8a1666475c139c832441b90f8e1836978ccbfa3b616e892136586c2594f6d215e297f43efbc077dda6f188e5841b",
    "signer": "0xfc9F115CD981A924863B6714CEC122BA3fB05FB4",
    "userId": "715767715"
  }
}