{
  "manageEntity": {
    "action": "Save",
    "entityId": "692961",
    "entityType": "Track",
    "nonce": "0x926834167f3fd5df0f0c9c6d364f0fa800ef760f690f6b238b36dbd2d7838d48",
    "signature": "0x24acc30c691bbd8de99384103e588c814c60174a64f504490479853dd7f067e46e7a8b8234368a4b88ee68d21b61d4abb9399041708ecf418bd2193d65c3ee721b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}