{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "273798228",
    "entityType": "User",
    "nonce": "0xccda07df81ed3f04892e053d38e65bd2f8f191b28e04b572a86e5426b020e300",
    "signature": "0x398dff00cf24a5b98da1122ec66e657a320940ea39e8bad37acdbd0b65c2e4bf1fce6f54a5e2651ff64cedc11b3b1b3a84e33aa572377bceec6591e1baeef8ec1c",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}