{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3c227fc35142bbab77c84a782a6b98fbc87a17d7e209e0be794cce49a3532fc8",
    "signature": "0x66508e30f1005a96e73899e131e8ae5dd88a38fa8ae0538d78f4dc2bb94c161a28ccddbb56f718615558ac3d06f51ee32ac1de6c8786bf294179abae881904391c",
    "signer": "0x63E1B856BfA0Cfa2BA381C4F59838E153509C163",
    "userId": "553872362"
  }
}