{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "627198",
    "entityType": "User",
    "nonce": "0x3187c2cc9339772e414005937d91c61e920a9013e29d13ec64018328644b65f8",
    "signature": "0x647f461accfb1ab892026eef7deff1b9cbb4e9c0a5125cf8f04fe5e11cccb24276883a0ac9e8dd6de050ed2b88e54cd8153fdecb1eb2f680547c282c90f263c61b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}