{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x6f03747a7681efebb009b4a75f25619f8634061e90da3cb6ee01d1d2d772eaad",
    "signature": "0x36b587a99ee56e9e134e3a97ee9d1fb2a5ca4bcab0ead444ecb20e017a9add2203ea3655d932c1d450a26efb2ec215a4128bfb18ef19e0b13e224d8dd05af9eb1b",
    "signer": "0xE22639FD840080b20889373FEa6060B4757eB9c1",
    "userId": "274627911"
  }
}