{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "624702375",
    "entityType": "User",
    "nonce": "0x6ce15015fd09f206e36cdc3fc8b308d1b9ae4940978cf2f9f911ba829da4cfd3",
    "signature": "0x6230010605935eaf1e614cfd13adc10572d484765bc5b9aeb680c397d791370203606f1309d6560266af41a2d9e94da9d12269cd08a941a35e4c18deab27ea6c1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}