{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "739507",
    "entityType": "User",
    "nonce": "0xf2180921d876c52f867fb75d040bf790208c495148113db5d95bb4d9aea99a96",
    "signature": "0x190dbc6aaa49fc67e605633dfbe628afdda9258a6bde617cf4407a20cbd89fc07d54f096d27dea1e8a9039afc3012f3a413c9d9731c6614f417489e9096c938a1c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}