{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x34b1e8665807c3f29a1bceb720620ae5acb4a6c4588caf07e9e86f32e11a4605",
    "signature": "0x9107cec0f676000ba6bf385b62123be7f60dcae07e865d4e02b0f7b45d00ea0451d5b7c25e8b01ff0e50c99ea608763b04eb110bbd193d3133bba41de3b3d7291c",
    "signer": "0xFbfE539e9A45D0A6bdcc4b126a35a49cB2Cf8DA6",
    "userId": "488993730"
  }
}