{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "421466063",
    "entityType": "User",
    "nonce": "0x0802c4cb8a9e9d56082599fc66d9f237e35d39164774d561ed8a7848850969b7",
    "signature": "0x1a823d3d0bd0c5d5e65f9b5cebcfd973f05d55a788233cbd98867d1f9deb73897c64b81c28364dc5026b94a9d076dfb42c767b86f16ebe839f00963728af79711c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}