{
  "manageEntity": {
    "action": "Update",
    "entityId": "450615362",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera573mk3etm6ijupvs6wlm72qgcufobmhdyttxbg2y53bg6dn3yscq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":577892560},{\"type\":\"playlist\",\"playlist_id\":533032201}]}}}",
    "nonce": "0xdc76b96cb939caeb11b4b4d9e93b55741839715abc6386a8376f6686541be9e1",
    "signature": "0x11b64309280743283def721d3376f327fa83e85ad800f83b2f51b2520733a70e1aa4381150ac40f6ef3bcde66e6224d1571737b9e608ee0e8e53bc19ee4660561b",
    "signer": "0x84dc3FcE242E8531F4B00Abc3aA0Bee27EC70e68",
    "userId": "450615362"
  }
}