{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "756545",
    "entityType": "User",
    "nonce": "0xb68a30d63133ca06ca58520b6f968332d260dc6da3f2c6ee44a0a7eef2bd8fdf",
    "signature": "0x4372212e4366f637108a7c21498b690581c7b014401a6302e014728ee811b2224bee1ebf89922d92e00bd1a48e876ab09f8e82fbcbe5d77fbf6140edf69dfc9c1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}