{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "67658",
    "entityType": "User",
    "nonce": "0x51a0e6f70b8b34cf42d79d90af51fd42a3273d967d0e76bed0ccdb61c3206c25",
    "signature": "0x2c476a8f0a5b03c9616c443becb38329f425d33a12c074f0107a4c965ca862b17d82f4e200b5fd5795485a8cdcdecf8eec72559604dd18e5ef6d74f56a668eb71c",
    "signer": "0xDE3686894b1BB7886D5a1995730930c47824F3e6",
    "userId": "323456"
  }
}