{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1810",
    "entityType": "User",
    "nonce": "0x0f9689a5d544aa134cd67dd0f2ed41b32f07da7089de6a08cd3e916f522c3c81",
    "signature": "0x5dda03f7c87057fe8144dd2e7e6c7c03f6137ac364dc2656ffe7c3da1e2636440f0ed2944772f9101eb665428c78b53c5767ded176d5871f908f216091a6c4901b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}