{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "707937",
    "entityType": "User",
    "nonce": "0x4b660efe681e0492c1810f5fc07e1ece79cce9a10be3eb0b333a64c823b0c1be",
    "signature": "0xfa08f5ccc4e1efb81d2ab37aafb7d8a5dd3d6af40ad4aabfbdf06554a1e8bb527e22082513124181664286926008ee92d58dc6a2163e4ce3b3f2db55787c429c1c",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}