{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1af8c23aaecb92259522020dcb8b62690514fafa2f7e19b3faf13959e0e2b2b3",
    "signature": "0x765c4d5d4dcda76a7c15b7cc9151311f5113d4f982dbf69096ac91a0102d3652065ad9b51640d156002268fb8e79e3b4d2406621de3b4dd10f6d84287c97bb711c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}