{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "831499615",
    "entityType": "User",
    "nonce": "0x02cbdea6fe5c4f4b45ede5eddc64b7960e9f7c7d443ddac7b3ac3f9b0f5a9259",
    "signature": "0x15d5ae95f84881cfe8f7db79274a191799b26a7c129d13d26a8b5c8f0de528651ac50bca7f06f87c7e857aca02ced03470617ebae8d2e3b641aaa577e114d0e71b",
    "signer": "0x44Fe9338D9d1405927C73FDA0be0F36ae481Cd39",
    "userId": "983568397"
  }
}