{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74672",
    "entityType": "User",
    "nonce": "0x66dd70d7c5bee84fd946c1beb1a8f647118a07aeff09455d118ac13e4f8412e8",
    "signature": "0x07c005cf1f01689639a1f185d32b233fc9d319d3eb8041c0bb17e03bcabc6d0d27221c0e24338785f47ec362e875c2ce708116635a9f1c9b414ac3530e5ecceb1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}