{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3d9d65cfcba6645ad2da64eef48c3b32b46edcff4f09f2df6ae5e4f8bb2851e0",
    "signature": "0x7e7fbfedcd332cfacd0d95e7593ec86908ac9f7ae725b5937e1f3c15f8c0f00856b20316284acfe016de0740f9bf5f02bb228feebb38c9ad649bd2ea85f4a36d1c",
    "signer": "0xa87a2eAe58214E09F4FdAbc50f60D560365C5548",
    "userId": "627812446"
  }
}