{
  "manageEntity": {
    "action": "Update",
    "entityId": "490969991",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5c27cf76be1a3df03e61c8ab5112a3ad7b55618e52462986b2751e1ca3e26c30",
    "signature": "0xf80e1b49c00b8cc93a849cbc871839b0291ba0d9afbbfc5461596a188a6313892e31d3e4244de414cf2a2056b831e53836ebdc90cd99ac162e4986f0e8a78a6d1c",
    "signer": "0x4f4bC9C8F701deF8AaB6d581FEE2c33411F67E83",
    "userId": "490969991"
  }
}