{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "678698430",
    "entityType": "User",
    "nonce": "0x25eea11c87172583d24e4c483248d7f1ced417896dd866e7c185fdbfe25ae1ca",
    "signature": "0x4aae0018ef69e0645edd5db3cb58cb879eb8eefbd93cb33750b955111172b5e40b11f49ac8479bc4b7539e97b17b936c0ec8863e61d9713bcd81d8c2d271208b1b",
    "signer": "0x05aba01c97C4F182D989670622abE9c797782dD2",
    "userId": "508263176"
  }
}