{
  "manageEntity": {
    "action": "Update",
    "entityId": "75683930",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4d7db69bf97931745a92a54ebad3d4e7a5f648120084cff865d31f54da1293c3",
    "signature": "0x8018fda091fc4ff25084c6df2ab4f3226fd34a5f6d0aafa50d836078983fe4ba49d1f575f248dcec23433f5bec3f07eb174644f6e83e7a9744d01ca237c82a081b",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}