{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54388",
    "entityType": "User",
    "nonce": "0x378494f36bd76bf36a1d7d65fa47d007ffaca30ebf1cd4532b251e4b8fcb176b",
    "signature": "0xb10a806223381d2f2ca74002134cee809d9cfb98bd78cfb10e131095a487c64a27f9e6ba33e975e65e4e6d818eba7e509b0f8fa0cf5b22140d4b9613e57970111b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}