{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "689751511",
    "entityType": "User",
    "nonce": "0xdd9fa79a8535b4129fc7a4a2618ca79c86912e1f807cbd013fb1944f40153533",
    "signature": "0x5b2b8cd11f3a147ba34357b36d79ba918ec90a30f8846ea54b30c5bc70bf3119585dfbcfdaec918c3a01d79e0cc2e077927909e9b4b97c367051762b90a7f90d1c",
    "signer": "0x2acBF90b188BEa0e543bF348864E8a02E3814819",
    "userId": "969601314"
  }
}