{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13404",
    "entityType": "User",
    "nonce": "0x19b63e6a2d9618bdcf6b5b704d234d52367a456563e4c4761ef2ca2b2689e8e3",
    "signature": "0xbf41518ad8b53142510dafc19e33a1e4fb7df91c41a0b218b2caa461218f6c373fafac7eccefbbe63440f41cce98fefdf3852f9bf19b3b06a5f3d50a7d10e9ed1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}