{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1338554",
    "entityType": "User",
    "nonce": "0x6ed61c15a6ebaed0f8e804caacd85cf7dadcf23ab4ace0898a96b0180b613c74",
    "signature": "0x8d90f37c4ced31dd60538e69b8edc6f06ce039b61ccc7a802e5396c0188b505c7c9bb72d26fd94a9839bbd67a30e02528de34a55f5939ca7c9b9ebccdf80ebfe1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}