{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2194",
    "entityType": "User",
    "nonce": "0x99938fdb11b1b1b437bceddb26b6bc6dbf2c9a2d40bedeca60152f45251ed193",
    "signature": "0xbddef52d379590663d8e99a31d4df00e828cf3d046eda548821d4a5953a51f675953b9ed034cd711c6d99624a45f7f7ad441f190f2cc89466a5f80bdd4dcab8f1b",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}