{
  "manageEntity": {
    "action": "Update",
    "entityId": "506555278",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb00b7c3d9e695ae4ff99acec94e2abf47b89316896a3e07da61cc5eb25ca3ea4",
    "signature": "0xe1e769c6ea177c89154ff632e056d89172cd84ce33dfa2be14572f00de57b3da6288623557222768f6f1e830181f88e828315c5398986a327587acd5dc1854d71c",
    "signer": "0x4f046eBEA1DfCcc5b405945f30bB06749d4978C3",
    "userId": "506555278"
  }
}