{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "917715333",
    "entityType": "User",
    "nonce": "0x94508de921e99b496899f480a6c8904be2f8bce1526ef6cf468ede40da12e13a",
    "signature": "0xfd44cad8e49aed154873c4ddfe6ac7e3e31d1ad4c5b222a7bd66f237cd1c20726dc585c27c04fcbb27e9cde29ca7ba974412ad7aa8e3ecfe43a1fba4b1f2b7a41c",
    "signer": "0x647f7C07Bb90cCeC21Bbf4C1Ed89df3Bf5020eF5",
    "userId": "879984932"
  }
}