{
  "manageEntity": {
    "action": "Update",
    "entityId": "740062254",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieralpdlfnku2mmlagy6soudlgausztqdrinz3ybf6z5vqcmp7huqvgq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1413167279}]}}}",
    "nonce": "0x0d30363dd6c39818339f4a111e8fda6441dd25ddbf5b67285682178608f11052",
    "signature": "0x3d985f4ef69f11eb782e4776e6a27eb218f9cc0444130e51a5d86797cc8d443b541f3d2677ecf02ed13d697e3a2f00f8c7a7ab9976c36ba02ec292ede633dd831c",
    "signer": "0x4D4b044975729f8B03ae75F9BE9be704fFF87751",
    "userId": "740062254"
  }
}