{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1685453",
    "entityType": "User",
    "nonce": "0x9bcf4089c8926aa9179142dd03123cffd6e3b857dc85eecc8e94813f5d7081e8",
    "signature": "0x654e5bd2e59599a7d2ac1f299394b4ee6e4d5bdac8909faa27d15b84f56cab10452f72b256a7cbe4ed40946fd2f40e5e17c17d8ccce1c952ea992c4cb953c3421c",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}