{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13540",
    "entityType": "User",
    "nonce": "0x0a4775d0206221c0235bc2bedc9def18881def8e296fceb0fa85eb4b1aa2be9e",
    "signature": "0x246687543c4a04e67d9033158dd83b551dbb35c7d10a7d16a15f7866c4242863525d891109442d586e9459a3b8bfdc1f169e664dc2e23738e31ea38c2c3e90881b",
    "signer": "0x2F7db4C1AE3922aD0f32CEdED1870278dd17b64b",
    "userId": "467213409"
  }
}