{
  "manageEntity": {
    "action": "Update",
    "entityId": "831148556",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2e374b32118c68602c1f19d40e2a7b942f0794c8f0ea3a35e000ca96feed8258",
    "signature": "0x128757f066981cec46933cd96e14abe5d5c2294eb80f57c4cd73f1dcd6ecbbc57986999b3c36566186bd2fb78e4c89d40d63042fc956c9fcd82468411716c1e31c",
    "signer": "0x94f1f4dBd731cD5Ca4c067fA191A38306ec54DEB",
    "userId": "831148556"
  }
}