{
  "manageEntity": {
    "action": "Update",
    "entityId": "894539583",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x85e4d4db13359be8abde2e6a9c9e70c69b38e4e077a1e9b8129a3b12c2cc25ee",
    "signature": "0xd08be7ebe30e3aa606e7da7785903327e68b6be124a79364d00b836f0ed7702f3dda90368fc4c05ba39182c7f1c9b72c483e6f6bb8297131e6f1b26182ec8fb81c",
    "signer": "0x4103B9Cb82fdD37eb101C5602F10F31F3258c587",
    "userId": "894539583"
  }
}