{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1335",
    "entityType": "User",
    "nonce": "0x8a8d7bf2be04003699f6cebf1f61c18f475f31c29ce24e4040ebbe0113f77a2a",
    "signature": "0x362bd4c1b4e0e7d5f8cfca9aba490fa454b0a855f0bdbcc19a045e76e2fb7c1154b7dea23ec67a3e9c4ba951f9f8de3b7a0298eff61d60ea9ae2cbc6e621664b1b",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}