{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc89b69519740389549f637d691042db5f8392337e504d4f04915ad75228b6a66",
    "signature": "0x03f640ae1be72d156d96c2e31ac851271ea52264c195cadb4f067254d8898d346a33f2abb3f8a815865c59135354f6ab3fcffacafe76b6bd24b98a5389cf7de31b",
    "signer": "0x1680dB3B1580049442eeb1Bf72cc293394AB00dC",
    "userId": "752109329"
  }
}