{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "875797218",
    "entityType": "User",
    "nonce": "0x339fbf9552dd13cd8d8d907e5ebcb33c160552f4a7ccc50b47067b4127911bf1",
    "signature": "0x1ad76cfdf6b02e3f0ef6a67e4f088d00c4088f5940749a20c32da1e86f7077ca52605d20994399cc3407b938e348fdc3c653362086a75ead512be1eae67961e71b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}