{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0xeafb9d0a4b7b921ab5015c225cd56943e7decacbe22ae3b497854f84be64f8e6",
    "signature": "0x60cedf364ae6fc247a05db9f66bfc295abaacad32b87405f3862fe0f0d06150b53516209ead6b398571433ca75f0d805af001659cd5e38054383e9c16f2db08c1c",
    "signer": "0x5D4848bCf5c4abA1a0Fdf2B61408c9e4288aDb0E",
    "userId": "305415280"
  }
}