{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "520381623",
    "entityType": "User",
    "nonce": "0x26db7492aee3ea625b217c35c2bbf0b8e1f3bc264b6cd377756de9efb3759adb",
    "signature": "0x13a85609be70bcf879328861d2c932d1674aea6aa25f80bfa14b949cf9125ae375a3b445273a7b990cc56293df888534c717480106f4548cad5840f2e191e45f1c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}