{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "889450527",
    "entityType": "User",
    "nonce": "0x2fc87c9e5f8b837caea0797cfaa447b2b25177fd88493f8a9981fdfa28ee9e0d",
    "signature": "0x86cc868894ced14497b86b157a9ab3df6a1e61546b0619810ea8b49e035c8b395dc77feeec637241942326c9ac7cb81401d98fd79709d589c111c253836885ee1c",
    "signer": "0x5458796027aD8A259861E2C65ECFD1B027e9E8fA",
    "userId": "42614"
  }
}