{
  "manageEntity": {
    "action": "Update",
    "entityId": "606514460",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbc418dbcec9ce6ff51d09839b0ae11ab2fa3800f3cabff41f37b7452f92370df",
    "signature": "0x56582d624f4255b5816d7a85db5f01c28ab4622b63eece66dea67167f110616b2f5b3af0faa7ad51a9d7ba56a67aee3b5c0c36fd926d103f3bc73707bc804bc61c",
    "signer": "0x16d95048A18662ce6952aD867929390497F1803c",
    "userId": "606514460"
  }
}