{
  "manageEntity": {
    "action": "Save",
    "entityId": "162466",
    "entityType": "Track",
    "nonce": "0x79d79ac74230373f0a01d3bdabab7d9065c1181e26c9619452102a05035553ec",
    "signature": "0xd18fb919ae3ec4bbebf174761d0a32011db7e3b914badc8868667378e16fd2666fd1ad9ccd19382bca5d1d35c0797932070cbb6b818bacb09f2b59d6910729131c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}