{
  "manageEntity": {
    "action": "Save",
    "entityId": "572097249",
    "entityType": "Track",
    "nonce": "0x9dff7feaefa61c8edb378070eec5a14d24aa7cbb1c1c5ab19e30093e7dac72c2",
    "signature": "0x1eb283f30ac1c904cc560950f0ec8132ac406e6bcaf2a7c28beed9f9873fc15d613f14ff7c7519d96095af8200848333467d1a54b38e3f51f13a306af7275b801c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}