{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "910778788",
    "entityType": "User",
    "nonce": "0xd4613ab28da3cec91452121ee31aeb54cc50830ee5bef929b86ea3c1851a5199",
    "signature": "0x09688ec330253c00b5ec7904b96a50fa63f07d3fb2536ae4693325d06aa4b75b15bad1570498b9bba89cf7bf6f1444d6e36227f382b95dbb74dc2a9ecf8e82871b",
    "signer": "0xDf325b3870fdf216bD42916714b1AC2FA2D27425",
    "userId": "2009913"
  }
}