{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325624",
    "entityType": "User",
    "nonce": "0xa6fd8a7e3d44b886b0882d2808097fde2823f39540c6b848be70fa847e7398dc",
    "signature": "0xf23db6c8c74df3fcd5e9a97f05926ed82c9ab3d0152a197a74546227504671b237d329d756a0d3c76b91bc8606f11cd5dea7dc556e73dde1ffe68b325c7d128f1c",
    "signer": "0x9f5896C078219d89B9A5D8B9C381b7be8BEf4CFA",
    "userId": "56704236"
  }
}