{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfd60287b884a87293e235230506bfc0de3170c7066d98709aec992f6e6b4feda",
    "signature": "0xe73fb2453ce49bcf945f6875ba210eb5acd175f9021a81d361e81a33465974595266dd195a2606441dd4e00f52b10c67a7c5c1c6a9dedf297678368c8b1b319f1b",
    "signer": "0x8a0f09823146A91B31F57911f5747e374529770D",
    "userId": "604700898"
  }
}