{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x5dc18dd8be51cac56c0a75c33157e0fefb39799e707a1a079cde2accadffcb8c",
    "signature": "0x3c0379a5170928541c11d6ee9d5dd8d5fb754046a86e636166a474d9c8a7be4a4b4b8c25234930ea054ef1d702dbdc535e3aad688a5a479394be52046210ad451c",
    "signer": "0xD21192e92319319249f3df55efE06b0809861c8f",
    "userId": "924892254"
  }
}