{
  "manageEntity": {
    "action": "Update",
    "entityId": "688478140",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieradr2bsxo2sivykjspkg4n44bvvyckrwada77fsxql77hegqyzigkq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1795117483}]}}}",
    "nonce": "0x2c85ec8f33ee5db16bc691a90c1beeede6a42f7502d8de981b0e62d65fa0d1f3",
    "signature": "0xac33aea698116b58b40085c9d64a372e8101a61c5766c86a4dbd8689f619f59c31fb914917dffff024a00943d96bb138ee0e661975daa56a1cfb1f697af44dc61c",
    "signer": "0x541c83d5963dd0b2c51747Af37C6da21a4dD2aff",
    "userId": "688478140"
  }
}