{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x55e5ea84f2c3320c948ed314c286678c87089f00c397226d0b49d9d20823c423",
    "signature": "0x31329e0d6e3af175f1e547912ee6dadb2bb4909a294e0c725fd78c609fe8d0e8704d50be8ae77915d63b5596ea88f3c1f1d59ce006cdf1691081e4ca1107017c1c",
    "signer": "0x1C91270aF9483550C16389c0d10F0a9e72fAA407",
    "userId": "451779920"
  }
}