{
  "manageEntity": {
    "action": "Update",
    "entityId": "124431641",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x54a380efe5c70675296c92f0a96efb79d47554de0fe9ac0af608fb07deb6c1ad",
    "signature": "0xa18830645b2ede90fd1cf47259e0b1aca3ebc4c5a13ce6f3184ce7313d0b5e733b1cd7c085f017bd4e62fb6797cea134195241c30b4139b984e2d50f28e39e1b1c",
    "signer": "0x168ff3b3F21912D4d676468A80Ee2af0E2F24a59",
    "userId": "124431641"
  }
}