{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0x8c15952bd5e39d3b47ea7e713c82d4dd84b4b970c102c7cf487cc29bf7742786",
    "signature": "0xc1b05f36069cc2a5f1b05113bcbdc81a8a72f0f16d360a502238456506b719ea55124a042354471698b7c2e0909115b64d100e863325497fae10f0f0ec5fb2971c",
    "signer": "0x216E3DcB84F1654f711041294908a8f8ADb25766",
    "userId": "643512122"
  }
}