{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "677630",
    "entityType": "User",
    "nonce": "0xe62925b4b7df85f1bf97c7cdaa5bcefbeab05906040831cae070543ba989e268",
    "signature": "0x5372944cc4dcc7a1bf8746c4b38a60124d48c49d0b12b34219a7e45434e64fdf2c76dc4697069aea5d2b289e8a5131e3707b3839929fc333986e9ebb58ca3d861c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}