{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398267373",
    "entityType": "User",
    "nonce": "0x14459a8810182edf428cf018a4d76cc19f41d47c8865d36159c1932691378590",
    "signature": "0x39c540b4cc625a569b00476f259e71463178de2977114233ac8faf6a8c07d76b4784291b21d50a7a9aacbbe5ec3f3542d9e620cb9e9cb5bc5e8095d3fb0c38121c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}