{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "124581",
    "entityType": "User",
    "nonce": "0xc381dfe59ce8e0a71dc3ff271deed37df34e075736efa2e9239e35a83b31c46d",
    "signature": "0x59b2cd2f387ddb068045e7a3edf12f09e7497276c83627e5ee6688b8f01342695f13ce59c7eb1e3773a5069de9c3d936183bc831c81b192360824cf5ba94d6051b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}