{
  "manageEntity": {
    "action": "Update",
    "entityId": "640804276",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3e3f83f140ae6ce176fd71f117f43b59a042896ffb0222d5bfed82e2eb793e3d",
    "signature": "0x78636ed7a37f99a3aec45440ef7577eebbc5014ebc799c90744bf1850a85daa931110a7471e402b28dc98aa5d3f97148fc739e0ec00aa551d18f9f17d5431f7f1c",
    "signer": "0x2fff57D5628D87Ce98d02775C9cF63dB765aa6c5",
    "userId": "640804276"
  }
}