{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x5ab173db6b33f8d7c44163c5551dcc93b4188557b4422ffb79e7b98a4e7a2cf1",
    "signature": "0xc540d122dd6c83b19a733d5ad6622c6bf18f7e3fa40291ca526388f5e8a16dd6317eda37e8f2d0236110541ee1dbbd8cb4a371766e578b1be3c557251c3c30441b",
    "signer": "0xa85dce385eaA369F6073e0b6e242561d0870425C",
    "userId": "308558165"
  }
}