{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1684692",
    "entityType": "User",
    "nonce": "0xb85b45d2a408277d973970bb792aaa68ba221887358022eb7f062e56fbf23ec0",
    "signature": "0x7f34e7a83d0918d44e76e43a6319a0cd1271c502474bee8a5a87847ef6de9255009e70715fc700a06366ebbc5c557f69856e1ccfd2f0e335930bc52cf2222bb01b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}