{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354864668",
    "entityType": "User",
    "nonce": "0xbd3e7beaa325231f1e67b069006db5849fe7f4bbc60ae043921fa5843c05ec8b",
    "signature": "0x2ed3c632e79d7a4161463112f0fccd666db62f1e405dbb287a7178249424501211d2f7b40d17ee588b5de38cc86b05df953c640dc64041a6b889f6abb14ef73b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}