{
  "manageEntity": {
    "action": "Update",
    "entityId": "402574593",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc94d288c61e928b04a7a0b26d1ed45c93c8c32824c242ef4efcb6dd8dcf0eab5",
    "signature": "0x7cda0d0daca7a5321c3e42518d56ba6ad717a9be1e0fbe5b5c4cebf1aac012c702a2e752460542d259495e67462fc2d982bc2e1f5f3969e4a65bf22dee632dad1b",
    "signer": "0x766E1665d4bB9114Ee8a0DA1D8EBD12797f038fc",
    "userId": "402574593"
  }
}