{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "615556",
    "entityType": "User",
    "nonce": "0xb63686384c4e1f1cad8e7adadb176e519674b31af659e71d6ca6f896ae5cab24",
    "signature": "0x12f2c1be81c369509add2f28c836c02eac12ef2a01dbf707ab6cfdb6693154295deed76e0a35c51313a2d3cefde8f6994f2a483ff9d4bfad7f8c424e680ebb8c1b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}