{
  "manageEntity": {
    "action": "Update",
    "entityId": "704077812",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc30ab1c5818c523e742d63834ef0387354ceeb763fbd3943ea249aee5abb33d9",
    "signature": "0x36a90293ac3f0b1816f729b751c47e3804668236d0754b9da36ac6aedf11e7c01fe05af7b7d3c305d3738ff967f550db4e1208864400f75280251a046586d6bc1b",
    "signer": "0xD9C67268A1bBb71815E452a7150B823fcad87151",
    "userId": "704077812"
  }
}