{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "19702",
    "entityType": "User",
    "nonce": "0x0b19c75ff78fe67d0fe5ee455bfdc2857ad2f43d7353d01f8d6781504ca493a6",
    "signature": "0xea1a9f98418617d2f55eb35ee9ca1ec17181d35abc2ece6d1d8d12797a2be6f82cef75fa9a8ba1ae33453fb091a4e6fbab5721ec1254140c4b24e05906fd97011b",
    "signer": "0x5391496E932a3143AeB225d332e3485D8f3f2a2D",
    "userId": "712969344"
  }
}