{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "908506084",
    "entityType": "User",
    "nonce": "0x257f1c8e895a700617d9ddf9fba0d957748e4146b7b0d7727de309647aff5869",
    "signature": "0x4e0120c409d1582083dd3e9b2d0b2446304c7d08d3785ac045c2e86b3877953d4001fbe5f1e47e13a1c295495a2287d6f59a7316f2a7e8050036b6bdee7006b61b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}