{
  "manageEntity": {
    "action": "Update",
    "entityId": "703514944",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x604a8afd5a0413267429e9c1eceadf20cf8ab7bc832363383293a88cfb896f4c",
    "signature": "0x670af72c7bbe8bf4a6c191f472cc8461de7bee83bab6154fc6db0b7d7f82f65252c5d66eb8ca0b2996e4df6a8a506de7f8f8379b3c1d92b4ce39819e9f53dfc11b",
    "signer": "0xc30bAbF21Ad5EfdB081cA75Ed3e544c7C1102B52",
    "userId": "703514944"
  }
}