{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3446",
    "entityType": "User",
    "nonce": "0x14ea42c72af7284ffb4c37e176f921e65da295b6c351f3903bdf709cb05f7132",
    "signature": "0xcb8d5877a1e2ef108c1307518ddc49fdcf818e4b305b35a31820325f0ff9c72d65375bd5a334b954114f5a46ce5a95550abb63c780503987bc67a9bf1afb22611b",
    "signer": "0x54baF3dc36e7FEBbaD4b09efB20Cc32736eC6d2F",
    "userId": "754550492"
  }
}