{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "128387",
    "entityType": "User",
    "nonce": "0xd4a193193fd2298ee32fdd1a48d9438321363346a72d75e2d751f781c1c2ed09",
    "signature": "0xd9a7b90c00e1c05b41b6bfdbdf6a3eae274596fef6e307e9e808fd9ac06e5f32549cb731c2a47c3d6c1fafc01f6bf92c957aa6171801b2ba354c20e0818ce3291b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}