{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "330269",
    "entityType": "User",
    "nonce": "0xae76cfe523aae0affe2c45358000e0fef479e304ba0b3e2ec233e147fdfc5eba",
    "signature": "0xe3ac57f5614f48ee800000bf16076cc5091f1ab33eef0d582c44423aaa9a7a1c7b61c9cd989b2a249a526fc6b7c21cc35255388733dcc266115066836e0b54e41b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}