{
  "manageEntity": {
    "action": "Update",
    "entityId": "649149786",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe134ad96d0fec18c0a7a03d312f26a3595e63275edc0080e185a26c02a788f84",
    "signature": "0xb83dce254d4684e1c804460eeee1579bea2c38237fe0cce29433ea90c6680e5a13dd182a366d580cec6c68fb2c34df75585e5be88f3a0539830dc9cb3ba6fff21c",
    "signer": "0x70301c1c3af1CA3030C1e9eA4A17366CE9D15676",
    "userId": "649149786"
  }
}