{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "486490947",
    "entityType": "User",
    "nonce": "0x8e19e13dfd5a4532f9a39f448349c46b840631dc5e3a3ebc18a612acd4d6a44b",
    "signature": "0x25a90eb758865d2b646993b80422b49725a8f7b1ad93a416924bdc432f9c6e77051f04aa2c8d71e54201c415533f58baa8051e3f16cfafda1343fc91398ad22b1b",
    "signer": "0xC789b473E10EF4b57f078893a38DD5E462d94368",
    "userId": "564344"
  }
}