{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "536740013",
    "entityType": "User",
    "nonce": "0xc1c258786e21eed0920a948b56503c6da38d0a6229b77097aa7a92efbeb3eaf9",
    "signature": "0x3f7d87b478709980102ee6056a94bf0ba3f4aaa8ad32ab9f4bfa183f9f92d1283f6114ff1d839e1cca2032212e7a3b7e66dd34cabf2e39b45ebbfad375188dd81b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}