{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5c72fe87fe9c0b2ba54d977bad629c8fbff4ef044096ef854e74da2192ef6ac3",
    "signature": "0x2362947f0eb391d8475879d50cbd1ed9389f1c6b4d2724181f30fd62a1a6725b293147f403dfc62225424d569d1b5e60c83eb9e61de8c99443575de9c986cedd1c",
    "signer": "0x6164d22C5753c6E9f1ec157dDef5A3C606E2f10D",
    "userId": "534038283"
  }
}