{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x8408ff790330e81787ff57d995b3288dc3caee80bc884287e6830977999948a5",
    "signature": "0xa55d018b8e9d3bdedff10423e73967872789d72ebe8b746f5352400dea4a268e10f52066fdf2184689635ee5ab6e81134c279eb7b5c19a5c6f159bc69a56d40e1c",
    "signer": "0x7e728b2B265C553aF3265EBe8571B4a28E6B02d4",
    "userId": "180658142"
  }
}