{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "537944538",
    "entityType": "User",
    "nonce": "0x0e836d8f33ab93740664bfe1812680793ba27df4e765f5f8865876ac81a4b188",
    "signature": "0x7903ed82a15dcb0128fbfe8c721f8f9fdc338f65844e76b26b54f918d3d7dbed48dba0314cb125764b256c9c73b10d62b459f3c76738a1ef9b6c5b133282e9441b",
    "signer": "0x9c3860443A17b3326308E6E90E9cA7835460e0b0",
    "userId": "898210232"
  }
}