{
  "manageEntity": {
    "action": "Update",
    "entityId": "981893037",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb8bf57ed56f70adb11212d6fca08c19808e559120038df4e3621316fb65b1adf",
    "signature": "0x96e2d0ab2ab5641ef0bffbb6525b3bf68a8e535ed3dce2e7dd9bf82a74e79605168f7dc9338a08b793e8971f3f8c1a274cd0283141c4224aaef7a3c288e456901c",
    "signer": "0x40F423EA7A296D8496CCB40BB242bed5fe91AdAe",
    "userId": "981893037"
  }
}