{
  "manageEntity": {
    "action": "Save",
    "entityId": "2034726555",
    "entityType": "Track",
    "nonce": "0xcf59931c9941427dab114f3960e3fc4daa63079319f78d7e6ebffe6995c3e713",
    "signature": "0x7f6d3de8e6a31a626c0541be92f5632d671eacf45d7f64387b36a70be23216d57a90bedb41a7783f4e5b540091ec6b265779b1fe171c39e0f3591411a26f0bc71b",
    "signer": "0xc177dA99f6154a213E0aBd8752F518D7344C15D7",
    "userId": "186590"
  }
}