{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x16d269c50f0ea2a5303d7960921d10a09c1d9c23d3e64b7859529177af7a1695",
    "signature": "0x164edcf79329f5aaeae207f97622006c3e0e49ec8ea3e028c1d29efdaa96b68203ee0f4750f256222796254e4035d576ce0255a9633ec8b0036e6e1356075dc81b",
    "signer": "0x90FD14E5f569756111EE3AECbcE1AAb95c2A01da",
    "userId": "86867162"
  }
}