{
  "manageEntity": {
    "action": "Update",
    "entityId": "874338785",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc4ef9341486573ee7dc6427ade19a1570884bc5ae57172f725a443698b3ee3cf",
    "signature": "0xfdce49835fc6223d51b57f5359e42a478cb95ca29e5e480ba87a8ac87dd750d46949e0792bc8451c98d9d694f53ead01ba68dada0be4d16337a9a9030d5aec5b1c",
    "signer": "0x530E0389C7352Fb2d85d2CC319F68bC2df8C4392",
    "userId": "874338785"
  }
}