{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74883",
    "entityType": "User",
    "nonce": "0x81c3794725e4f8ffb9d4cad089fcebfdcc09e0b4ad50109d2a4ede8ee62387bc",
    "signature": "0xd3816c536c351626d8e6fb8ff2be2f9d566d46fa0d4738522f3d83bc6f0e367015fc50d4734c30b29db4c9ff3e403218dde453369974420ac7815e284df02dc71b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}