{
  "manageEntity": {
    "action": "Update",
    "entityId": "554920508",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x69b97178e09a4dd77647bdf693353ee22a4c6b0c8fb45fe4c1623d57f3847e04",
    "signature": "0xf675ec89f245c87c6e62767f43d56143fcf85765c037c072747a7efee21b36af470cb75aa7b9cff649ad99fe8602113e811a106b7256806a8dd18406ae91c8781c",
    "signer": "0x989faEfE658E0b6dF1793197b0De4137Cb1aDD3b",
    "userId": "554920508"
  }
}