{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "857551474",
    "entityType": "User",
    "nonce": "0x5e50564ac0f17f2693ddd3046d4af0d68780e269c8687be30770970f7d71e3b4",
    "signature": "0x67543683d276bf5c36270b9e44e6f7549f8a9ebff85f5063e4599efd511d0da746d41c603691ae6d142ba24d1e3a22872432aa40e79763250c33dd85f99f20611c",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}