{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "385866220",
    "entityType": "User",
    "nonce": "0x6a0185574475060269e4763916efa009495834b7b27bdefe99dfbf2ead631b4b",
    "signature": "0x33dca40725ef54f2d73bdc0a1d2cda593e7b46200f4c4f0ed7cba9a138aa932371a9df9b974ddae810062f53e118361de39da1d469885e82cf7a63afc30abb5d1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}