{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1689155",
    "entityType": "User",
    "nonce": "0x971ef229ce7f4aa1a2b02d6ad1e2c585b3918bb7dae824e68752cf68d30c8562",
    "signature": "0x8047cf5630ac262759b24c683e878ac5a428a87a03d067fdf374daebb43d96dd7ae13d794278df0793fb90e4f03141e0520534c950bafecc4f12b03d1bebd1c91b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}