{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "764248678",
    "entityType": "User",
    "nonce": "0x60389403693a7bff5aea7361b34199bf3a2bfdbbef50fdfadcc6e9a0d99aae6e",
    "signature": "0x5b668ddfaa77a7678d7a3630ed86949a865b6dd6fd8299cdcd419a9e98f388a60eaaea140d1bf54870e190827314fe060d0855995c32cedb65440df2f83bf06b1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}