{
  "manageEntity": {
    "action": "Save",
    "entityId": "809052",
    "entityType": "Track",
    "nonce": "0x4856e93cf3dfc583331f8514889637200a298bb8827310741278004cf83e9b6f",
    "signature": "0x8d36d231d06621671b36e28b618f2dabfaabfa8517cbac42265ac207bc833aa17ade978949e8dc698120298d158d49209678d00c3464d8ab62ae9852fedee35a1b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}