{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1437326",
    "entityType": "User",
    "nonce": "0x415f2504cf9fe3d354352ca9dd56eaa4ce65c993c9ce26b7e8978fa55ed5c43c",
    "signature": "0x781b36ed617c9fe7879680e3f99ab1d18eb18bd086ee27783442333210e58c7b7f3ca08b787ddfb5e2bb2fca2c3c2a6af8edae8b20aaef9109f2405235212c881b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}