{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0xf2407f063290ee44931551422dbeb9cbc47a2791c66a2175092948d16e422ed7",
    "signature": "0xed5db57bfc37ecc39c3ae891b6ceb9aafee8eff5e00d7e9f956f5de473c38f9f23885c7ea570af6d7b639da8eacdcd386a0c3407657ef995f7d10461649e28351c",
    "signer": "0x9D25CA757001F2f1F62f38c465aa70E0f89Ea39D",
    "userId": "879689249"
  }
}