{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3d79633b35b4813dae4910b71fc192cc96fd09d38c557c0c0166fc6c53532021",
    "signature": "0xf940b33cb52aa7487cbd9583104f6459ae7ba8b64811831d0ec33e73ccb8e8d362cd96deaafbc3d066256325cd4e2722b99e1a6215b10bb64d7cf7319478b4ac1c",
    "signer": "0x931f6B856D98BA3A614796446bD86dE98578f87b",
    "userId": "667420641"
  }
}