{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "516843970",
    "entityType": "User",
    "nonce": "0xe12a51aa23b737b675ddb5cb003bac7071fd7ce32f3daca1f9378573970df0d6",
    "signature": "0xbb6ea080b0e4c8b164d5946be86b55cb6492f06d7946d344b973d9c9a199fbe943a78319b8b38f83772ae0c7caaf70bea26f51792bff816ac5824ea9c49b30eb1b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}