{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe7286e8bfbd0925b3afe91b9341a6d1f7a0d72263ce03f605898693ac7e51b21",
    "signature": "0x9eed56d77c98876ed52c4faa7898e1219759cf84e5d7ebd99aa8c86defcfa62c21833e57353099f927d9415d03a238354670930b819b47ae1d18e0e3f285a8521b",
    "signer": "0xd9D6DC53CF770DA5DEd7FD513807B4632af2A75d",
    "userId": "454062161"
  }
}