{
  "manageEntity": {
    "action": "Update",
    "entityId": "666565598",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3c47d7259b4485ddc32ea414eb22d7239a7a5c949cedc0568a59f2660c86d2c8",
    "signature": "0x7bb62d2a90159401c17a52725b88023c5fff6f4929f752b7162d00586dc4476c1230994e749b8f84adcf0839f051b6d027363a7f18ef2f8861f06894ed7be4611c",
    "signer": "0x164A6D83Ac1907c8B3aAAd922d608eF9C6304BAc",
    "userId": "666565598"
  }
}