{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x32fc77f4aea8f6177a39c3cc70454f592f583b79fe8d4dc1c46bb7c7c36efb10",
    "signature": "0x9a55a3ede88d5975ceee7f0f5b846a9bb90c399cd62cff5542d1afd19c35187a18faaa046eaab11d948809c59a05a730b65812ab9066182cc06b60aa7c3a3d121b",
    "signer": "0xC5d18b553bBB15AF66038908A658cA6d2A61438E",
    "userId": "603509540"
  }
}