{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1dde963ae3019cebbe318b55990a767abd8f2cb2a5d3f9ce9748fa14be884eb6",
    "signature": "0x9a0b9620e262867edebddc482b043a638d640b45a1fa4e323da24131eb69f1e40e6745db016404d07fe67ac7a462eb5d2b64bdc4d7019c6326e8db351e72f2341c",
    "signer": "0x1BF18676e3272039E0bF8f2a021954D13cC10a6F",
    "userId": "839909525"
  }
}