{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "30849355",
    "entityType": "User",
    "nonce": "0x535e8ee790d4d38c0735fcff3310216191aae682e9a2dd09b71d1a40552bd5f2",
    "signature": "0xcaa01a90fe0e7061d6641d6a989551fd20087db85f0844103d103853fadec9a312883f4174f91a4a1202a1a60f1bf57bf88fd61fc3f201e0f474bbd219be10f91c",
    "signer": "0x7604Fc1Df216CC6E330cCbC9802aFa3E13F8EBE9",
    "userId": "830022953"
  }
}