{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x849bccb49ceb44ce6e4bb8b21a690c6ec0b1d0f2d4b5355e3a36bf20e02969ec",
    "signature": "0xaa6e3e6c4337da8ec0defa5a852cb725e24cbebecd9375214681d3ab821ac32237e9f6e63e845045bac852b15d3a9538a5647692f37f5f210f59ef166ea0e57f1b",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}