{
  "manageEntity": {
    "action": "Update",
    "entityId": "690093689",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7188497876f6f51f4270d63ff2f9baa593025d1b6fd854f0282af8f379cd172a",
    "signature": "0xb4fba984f8f63261166fd2ba3767ac5bc29b1e98d06877fda680247dcf23f77239c81b54e3b4959f28ed280600e71eeee02defbae71765ccdf9160f0e8ebd9a31b",
    "signer": "0xbb3b8C270080b0DAE42411345FCDc6a00369e247",
    "userId": "690093689"
  }
}