{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x27f109c7e594d1209339f6031e86e0f956d7639983d695c1fa6ca4ff31aa0f6c",
    "signature": "0xe8649567a9858c431e62512c9e5a9b85b233dd4a3237adf77140c33b68c89659213d1f096e9454fabca5609d03cd9c950dd3c20c0b69537216ee79b98ced89cc1c",
    "signer": "0x7f20C9b39E77f853A78624cD079bdDcE710cB5B2",
    "userId": "497438937"
  }
}