{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "287521",
    "entityType": "User",
    "nonce": "0xeec185dd56d523bd83bccce6e90e28f952a6ee60a62dd0d39ef5e26673aaa344",
    "signature": "0x9238dd72f6e254b1b45febd96b2c839ac7b90a56a29d656bae87c0d7b3dd4ae47fd739dc2003ccc084a942229878f29c3b64f4a7f7b010b3506b21f558fd92921c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}