{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1316197",
    "entityType": "User",
    "nonce": "0x042d63ed00c99244dd5ddbc5fa6ba6cfa763efbd4500b6742ff56c661a2f70c3",
    "signature": "0xb9cf9f2256a5cf0eb35d9fcfec602ca2658674ecb0693a3c01c9d58b83d3b7a32cb208cf8ccf7d57882b746ce3ba840bdd010523a614c48e93c007af7d58068e1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}