{
  "manageEntity": {
    "action": "Update",
    "entityId": "108115524",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8ac9e88533df5b4c34258f851bc752f8e5e42a806491d5eba13caee5504d1a7f",
    "signature": "0x6320336ce7ccaaf90cbb6ddc11018b4c0084edd1830c429431c644cfddbd9b291abdaa9f58181be68f5034df179fdcfe2c7938387ae48ff360b6c05d523116801c",
    "signer": "0x765f679C4621fC391f9c6805c64558B1F96335db",
    "userId": "108115524"
  }
}