{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "197768",
    "entityType": "User",
    "nonce": "0xc86a0dcb6d4877204a561fa388daad1b6756f2f74feb7d119b1ce8c6f88d2b60",
    "signature": "0x16d5cd172135d5ae4a3cd9b0c7402aa8b30a9fbf8cd5cba9483cf0df278d16d939df9106c9f823fbec4b02d4602a3e5a25cd3b8643575aa7e01176f8c3c19b3d1c",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}