{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3a3cd5ccafa509b53fdea5aadc95bead130b1f434cefce3ae3ad15bcca900c54",
    "signature": "0xbd7d0e148ec4e953f647bf3480d9e45e5847c8262a99e126f2c797bf2f260af77efcd79510e2000d8d5cffe582a2f432ed25467f837bbe9668669833a4aeda651b",
    "signer": "0x2230770EC85946F97685aDECD4b734f51662F050",
    "userId": "887741865"
  }
}