{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "406225571",
    "entityType": "User",
    "nonce": "0x1a89e1e5ece62b747a2eb627c4291225d77f89706d458b00f50ea292dcc59922",
    "signature": "0xa6534b33e3292a944bcdfdde95a2141cebb49a549051f897cb479f5ba934c12d0738d85399792183156d3ee0749150549c8340ea826d046b4546e8c71a2872241b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}