{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xad679fe5ad87c2812d2c6874cd8e4cb085b3fb1695b986f08ad4514ecb87acd5",
    "signature": "0xfbcbf76436ed8da69430707804c391c9020b8f5b64b3b798cd586c3ff3ae38066038988ee0ad113c4635891f243b7d98d7962ad7cac5e08929c49725235c014f1c",
    "signer": "0x2EA5a1c8D7557f2181EbfCaA54B20D10133AC97E",
    "userId": "509677899"
  }
}