{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2db0a02de812002c03874dbd0dd00a1bef6a40812fe838efe134406bab7a04b9",
    "signature": "0x87730ad9273e3a198dd234289a3168940af7f7f511cb71963c2fbd0090aab43e507201d094177d7014981f71f47937150840263d2c7dff5f9b1dcb9d8ae8b2461c",
    "signer": "0x406fd2b6f6C6cC5622Ac1c5799cE4911D81e02a7",
    "userId": "461949730"
  }
}