{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x14ad3e3a3203fcae070691fc4f5cf0ffed5451f2bcde5fa37ed8ad1e12914f82",
    "signature": "0x3ea90a1da50d28dbcaed76b140e195b6ee95efd174c982f5af72bfdd9f92110f30164210e3f89bb7f351cf175dab3d90abdf0fc7e15c0be92c18d84f7cd0886c1c",
    "signer": "0x841Bf189e93f2E50766Dc57653870C62E539EECE",
    "userId": "638456129"
  }
}