{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "978464946",
    "entityType": "User",
    "nonce": "0xa4ad10f91479c4b8d9096e680b11609814a55faa1889269f46a805909e1bceeb",
    "signature": "0xe6f22b19a5899714f53ca3a41aef23a2cb35ba97046e8a7ba3cd8e176777d7103b27f645d6eae18bc82c1309b3750bb230df3301cc6c862ac059ee9c2bf03bb81b",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}