{
  "manageEntity": {
    "action": "Update",
    "entityId": "174187428",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc6ffbe83de859159c6e993bada47bfb7f0780a0585d87bbc74a3c264e4a9348b",
    "signature": "0x8de880be211e84f44099b4b48e45b7a8f7389a61f5afc463e0f44d6fbf6b29ce25aad09f65c46954beeb170af9379fe694f4391f5f2956886b7e4b95b71dea921b",
    "signer": "0x67c52ACfd4bB3AA1eE904C665CF4f7a87ff3054C",
    "userId": "174187428"
  }
}