{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4dea718d7a4154b3f920d6b602b5ab04e0f4b8cd69bd5e9d3251f2fc3af2d7f8",
    "signature": "0xd128d7a2b322278734ae2d4f79b8586913da506a004c01fac3f0ca2329e45951490cfc952be4370caed30e0e090180873bb6464a4f6065ae5230e8ab010064411b",
    "signer": "0x7d40ca2Be7a233Ea40af778abC2e4f8Afb03ec70",
    "userId": "895912297"
  }
}