{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18192",
    "entityType": "User",
    "nonce": "0x37c5be4af99a23ccb6e7bc90e125218c93675e9b46d205f3ad0f40757d2ba81e",
    "signature": "0x72675d604d083e4b0797be4306626601f2853b23de695dccc1095f4290b20f154d26f68bd272cd8f673f042759225369cff0203e9d7ebbd36a76906d3f548f931c",
    "signer": "0xB874f4621c8c59121feacEaD49e379Baa95ebC5b",
    "userId": "480497000"
  }
}