{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "871265248",
    "entityType": "User",
    "nonce": "0xf48f9e4018e5a41c57680caa68b4c96b90f00cec99a044e0ec4b8ca35346159c",
    "signature": "0xa654f14857d90047b80b0b9e41e79cae45fb37ba16bf1e3ea735aee8ad4ef28e777dee229e8a9d3edd5f5e50718661efc865e70b785503f5ec7d97f164cbcede1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}