{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "423422344",
    "entityType": "User",
    "nonce": "0x9aac001b11fca2dcc55f7768b8a7537e09fbfc9774f01212e2c19ab40cb4f1c4",
    "signature": "0xd625d85f7358d7261eb354fe9eac1a95403fb0e5f1a44a0d40430e853493219e5ffc4b4edd6a3ffbc63c5ca175de3c8fef56da63ac96793f878c00b99225ce4c1b",
    "signer": "0xaEFa40feA52091946C151469Eb611Dd74177f554",
    "userId": "65828371"
  }
}