{
  "manageEntity": {
    "action": "Update",
    "entityId": "153639946",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x91772a2591318c81e072726574fd657add05b8edbb4b68b4e74f67fb69918597",
    "signature": "0x4032bf278c7fb79370bb61ced1ef3a890171cf5eb2b1cd5c1f7123d4339051992821fa3af9881807afb72fea40e63f91d8f9651b0f5bf4905e152e5db43ca7af1b",
    "signer": "0xaf18bF4a2a2c49A50A8Ee5bE0a227FF7577E4889",
    "userId": "153639946"
  }
}