{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "140973",
    "entityType": "User",
    "nonce": "0xe102df567d04a3d88a0ce7026141da7d1ce4fbc37f3cf896a65e7ac1776827a1",
    "signature": "0x6724b161d1a57e6cc55fa28dd2c825349998dff93b3732ba236fa67e748f9c2e4dc832206f0e3beb80b978bafbcb829180350a96e15bf23422c4b5ccf94512051b",
    "signer": "0x9d4b9d6c08f13bdD52f5B6Cb488a70DC2819e2de",
    "userId": "540238713"
  }
}