{
  "manageEntity": {
    "action": "Update",
    "entityId": "974988825",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1ea0d7dc14b002d9e72fec0e90b2abcc4e6b8c3b25080b6b27719d2bfc93c853",
    "signature": "0x8a7a0a86f61111978534bbdc292af37b9035c233fd81e4dd58c39ccd56d68e2a2e2b22876f2a80116751aa155984a3eeaefdcde46f81d60308f57526d5f11b9a1b",
    "signer": "0xEFA5862656812D54928c0E06C9a83EE687AA63f8",
    "userId": "974988825"
  }
}