{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "752372",
    "entityType": "User",
    "nonce": "0x5c16c4c2e073d39e95fe252a1b2484866ac1bdda455463fbdbca983e0a2e80b3",
    "signature": "0x17f8ac246ac025bbfed97ac860bdf199a3f3ab3878a48f1be096d71ee6bef8883cde13fba4e6b0ce507c903e9b4623ca31e545d2b894afaac8d3f89279fc444e1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}