{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "723653",
    "entityType": "User",
    "nonce": "0x699e5a9220efbca3578de41647a095da32759ad77bc42335788efa2fff2d25de",
    "signature": "0x057bdc56491835033845f2daa80afa529d0f5527bd5ff9d6daa07b08035310c5624aeea9aa446f12380a2f7feb9a903b6a8831ded1293d90bb3f8519b74dda211b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}