{
  "manageEntity": {
    "action": "Update",
    "entityId": "224104791",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe46bda8ebad49356edfc682259b66aa67f8d930a5968e8e2c3db5c95b79f35ee",
    "signature": "0x5c0035e27346a613aa800db97e911ef37edfc78b2ef9f02dd4f05c42eeddd5e27ec39691e352183ef2769938af9dc9e21ef1c9edd7ed93414052bbacb448351a1b",
    "signer": "0xF9aC4bf77f60929E1841E213DC24cB1f1A56CF5C",
    "userId": "224104791"
  }
}