{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1425369",
    "entityType": "User",
    "nonce": "0x25818ced155f7b4f63a3c5e3b1eced7a6e82b338fe481d113c4d0d83c7d5559c",
    "signature": "0x6a5532e5590cbdd4208b09381e12fcc4bef3a3c3c636fa0ed45a5501f778f4f24c01f60fa59adb9facb5a5ca5700e82a6cfe23ca717d2c84e0e7fcf703af222f1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}