{
  "manageEntity": {
    "action": "Update",
    "entityId": "353878703",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierajeppn2oye3elltyke42fdin4ccwvqnnijvkpdvle3crxemmic3qq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1145335783}]}}}",
    "nonce": "0xc63955ab3d555548cb753d96920f2ec9d8de4d98dfb8464d5ddc9cc9ae35aa5e",
    "signature": "0xde7afef02fb49413cd7838643f1c34ced541ee28e350f3214c9fa9c64c7567cc3f02d0a3ea4ffe72b0b78a62c9546604860ba783ff4d057b07914e332d31f3441b",
    "signer": "0xA9a8cC80334aEfE9dca7cA4b3B306705139fE37b",
    "userId": "353878703"
  }
}