{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16281",
    "entityType": "User",
    "nonce": "0x57b9cb5a94e651bbba9112815a75e20e01cd455c1899769ce1306b1a9fb40b2a",
    "signature": "0x1d27c1f2a0d904d98719ad6d712c1bc9dff25678b9d663c7e39c5878bb0282ee56c1a5d65babaec25903d1d3febd1403c92e7b7a21b6e945eee06c2e24a67b501c",
    "signer": "0x5617e33979Af319eD3a9a6bFF820d69b7e8877a9",
    "userId": "171261"
  }
}