{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x16236e4760c19b62709d13784a22b4f0dcec49287c1becd5d6bb74780b73cf61",
    "signature": "0xd86662630eac59c04835d13a8f158f57c08b2856f30d33dd7a3a30f8c9d00c812801b4240f7f91564a38b573c6cd055f12a516dea6ddf92aea8d724a6dcb43f81b",
    "signer": "0x9c1cD07a26673bf233aD87DFb181393FC715937d",
    "userId": "645221661"
  }
}