{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcbe470430b70d88224652601608eb37b13b4b4e210461d6f8ce8c7008a409b06",
    "signature": "0xae524899f7366360b9411769f323b3256441dbc2e0e533fba01b202ec684d14d625c2b454a46d6d567549fb17b0261395cece457847e00a0004dcb9e116949a41c",
    "signer": "0xD04Fb510ECb6f4B299f89d140Df7De46434E97F9",
    "userId": "279870150"
  }
}