{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308196323",
    "entityType": "User",
    "nonce": "0xcc8256416905bdc59065a0447f733279614b029308defb53b91ebf09101859a9",
    "signature": "0xbf3ef4f7ec592772e0c07db27f04c2e6a54e70aee4380c62bcb07ccd154833df6641186e41320547cac0151377bf75050b2967a9a80283c66220a6fb985d08cf1b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}