{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "638733607",
    "entityType": "User",
    "nonce": "0x84e0c366c046803cef5b793f9b974c27a99c56f7fc5f2100132709a39ffcc2ec",
    "signature": "0x77c8a0c067ac23b1fe541dd5d22eb3b56acf4a58564dd251b8f1a866fb0e139d78021b1eabfc968e301b551c1bbe4b27eb3a334b336bcefe4560f5ce8ebba1961c",
    "signer": "0x1F9dC682fadBAc94c0Dd4ca2232a3f490704a737",
    "userId": "737872723"
  }
}