{
  "manageEntity": {
    "action": "Update",
    "entityId": "958315120",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6a0f28661de83f93ec580cfe97805586a0715875b3f9293b22cf9ca8dacb70bb",
    "signature": "0x296c4d786f2a3b20a6443f620674e91791e7659e7964d2ab040fb6319ab796c611040ad77304d09b97be0f17de6740c43954c6554dd463d8c392f8e4c95b31d01c",
    "signer": "0x5b0A1dc2f6ccD45B1cd4F2E117E56e38507f66fD",
    "userId": "958315120"
  }
}