{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "420647095",
    "entityType": "User",
    "nonce": "0x7ad3134e5ed7c0ca1fc46fc67a80be5e7e12f587299691a15cc272f444b65b81",
    "signature": "0xb90f2544612a63cdfd3e5d7ecd00e5abcb498c1b1a8e5ca9ea9c27bb33ed1efe0637ebd8dd63c45fc8aa8dd49edb57c6e221a5e26d0eebf459800822e25e33d31b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}