{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "330824499",
    "entityType": "User",
    "nonce": "0x6a920f57e684ae347ffbad1fd5571410f738e8201c73f663a2e948957c524a84",
    "signature": "0xbbcd7ba7539c512bc214055aa8e19efd11f5a35909bb7cf78ae7a8e613e7a22b13da39155bf25e03a345f9cdbf86ab07114ef1659b7928c83d3553e4ef5a40b91c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}