{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8a30fa0be1a202f3fe6288497cde37d7ee10feab6b6510cc041a228ca267ba0e",
    "signature": "0xf569a0c33bbfddd28eb6895791d5f4e64981967bbe0a7740641beb96e646d2c11de39ffa7d44044ea64134b02bb2e35b64d79a5edab9d3115016fcc1cd0a86381c",
    "signer": "0x79749e66a5851c322E885A47b83a32A4Ff588Aa3",
    "userId": "823787296"
  }
}