{
  "manageEntity": {
    "action": "Update",
    "entityId": "560013778",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x865457f2ec35c127605b806f6548f40d5e9e4c606369851d55f55dace59dce5b",
    "signature": "0xc2f6818fc5c77dbd7328cb5fa80f7effd420a5f2f12d297c127b4337426dba407c1cb91348fa3f8a34dba7b12613c15ea4dedacbdc0b3d5295e3a8b059dab48f1c",
    "signer": "0xaaa210BdF97c681107cE56847557Fe8137107B08",
    "userId": "560013778"
  }
}