{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x65273349a120b9f43ec3ddf004b27893d90a974926ff6aed9706863a6d38a1fb",
    "signature": "0x8268f5b5365ddb6e397e513dc5e375dc7e735716d5eac5f8b54c63bbfee86b265bd80b793251e3945a13e1ef23570b82ff2934c3b73ffa4211e87f910c9118301c",
    "signer": "0x314D77b75171AC7C89c8787106d3b63262c769EE",
    "userId": "667857623"
  }
}