{
  "manageEntity": {
    "action": "Save",
    "entityId": "1791576971",
    "entityType": "Track",
    "nonce": "0xffb02994b27edaa7c74161ee855c3ad431a0c43884038f552a2f893d0adadba1",
    "signature": "0x667751ca72f6719c0613ddc44c1ffe6a9b78887afc88c9c3953d204514eca9311a0f4686783153afb1dbd5525255b7f606e5d7888fd8c91754675e5e08cd2d9a1c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}