{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8ed0ddd7c61b2ef437e5a8dea1d5f1af492dc7275564c339afc9e0581c6b0d7a",
    "signature": "0x2745d0868f7b543a046afccaf1356b32b10f1a14069c53373626d143db3176887715f1a0bd848d0a8b0a6d5923b223dfe5326d122e84edb1e2f791593e22b07c1b",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}