{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "520381623",
    "entityType": "User",
    "nonce": "0xa5f3f9fe644e3dfd9cf0d0c174d6bd20b0962c4776d75dec0c44bc36b9888b3f",
    "signature": "0xdc328b0e4dbddd4ca10f832e169299659931d18a54a5e62222f978053fd764ab285084c1829454571a7b6f6b7334bc10d8d566725b5772fc999d76d78f182e651c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}