{
  "manageEntity": {
    "action": "Update",
    "entityId": "674339889",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc20c48d99503a2bff180e63f151a927082146196346902fb52b4b539e76202ee",
    "signature": "0xcd8c0897e3bd1140ab694d53f9747ef0cca1c022573a0b70a295cbe58d76bf5b23a9c261c55d4582ef7a9c05ac63b1df029f3427f4f2a457dcf85c2e29833e101b",
    "signer": "0x8838cB510ADd37b71093e4FD76B81bdd280860f8",
    "userId": "674339889"
  }
}