{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "884664383",
    "entityType": "User",
    "nonce": "0xa4b8649600747c595c8baa4a50a07cbe0cc20c41f91e57d868337eb3677b72ae",
    "signature": "0x7d0da93538fdf050662e5520e92dd5d37dd268738d45acd0e564754618c15db47501a6861ef4e1f8cf9b51aab8fdc9e5033832d306a56ce360e30454f28e8fe51b",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}