{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x19ec89c2bc4d05c40e8a51980940cb94f80bedb290c8b1ba3b3a6d57828cfccf",
    "signature": "0x43b5635f2c9ce41989aeb19659f9f766e3d7c04447fec1cb43d6c7c15975fd03059d839220a52e952e824559967e5d9ab6daac8968d22fc92e11a3de73ed3d331c",
    "signer": "0x97e358C326FA3b987637291Bb8a9B72BF3823948",
    "userId": "851987564"
  }
}