{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x593539ae46f32615813dcf78ffe81210190270ab76b292b555056a703245539b",
    "signature": "0x1a9a817e79850bf209c95c461bba1897fdf03b97ac925a3fb0e2ddb47a7cdbaf073e2a6a34b126954f77adba57bcb7754d750fb77eee2c3a796052c650ffb3ac1c",
    "signer": "0x009aa7b49eAF9a76b4b0e1D3C0ef92ba4e8ECEa4",
    "userId": "350390967"
  }
}