{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x76149df1211f4fad4ec5c6578ec37dd141807d8ec770db1ac6b9b0f6ba9a9b21",
    "signature": "0xbd403a81346d650542c4ce8eb2dedbd42cd013e9fe2e3765e21a7d839c96093e5eb04d8bf023bc719887698746ead19e8d1cc4c6be46d43f87c2cf35f31d205c1c",
    "signer": "0xD3e2a2Aeb739263055A5ec4484257b4927578D03",
    "userId": "117667088"
  }
}