{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "318437",
    "entityType": "User",
    "nonce": "0x877239c54befe55659cd760ab57d33d070dc32089d28f57c9635d459a26111ac",
    "signature": "0xa9da7ba6e9b01a91566669a1735adb9585b44b0ab448fbada2de5618475516211e90074183e13703a152e9473af9e2d878f1b9485e0f17c527997d215045d57d1b",
    "signer": "0x334c1E156039f843FC1FC4B64FBc58136cE8414a",
    "userId": "973129552"
  }
}