{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x23cf06827c921e360b3903eaa79af610c8e7ee1bd019542fa9e93fd4a62e41a2",
    "signature": "0xbaa9f2a7183f543f57efaf104c502c9fcbfe56f5e5e3b350ecbcf8e3d06c4d8e63af5a3af904a5f620e07b1adb75846114468f23ac56ebecf9d373cba33bd8f31b",
    "signer": "0xeCb28F2b00EB20f4Ebe64748030b3e68b882A2ec",
    "userId": "365239956"
  }
}