{
  "manageEntity": {
    "action": "Update",
    "entityId": "462042577",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8a0247e18d80573e4b1f5e8039983710610776aedb7f6f859cd4eac42344c4ae",
    "signature": "0x5a0d449bc59d03bd13a8158be173c4df83c44753e391aa1ba3b0ffa4dc63406e2c1aec110e9d61e0fa548c202886c839e8ad3cb3df957d3a59cab8fac0dbe4771b",
    "signer": "0x2129Aa31Becd7c8254c03a5a8cC0D379632482C3",
    "userId": "462042577"
  }
}