{
  "manageEntity": {
    "action": "Save",
    "entityId": "956390165",
    "entityType": "Track",
    "nonce": "0x8a562abf1a4d4b2d9f749e49eeb2d931090e67ccdb8a7730e3fd2a71eed1200f",
    "signature": "0xa69de22173ebb7d5917c90a9206c2455b0afbaa938c51a7e087de6b52ff3f16d6d9bf0b6cb716c113b1dda68af6aea6e73986cec4dd086805f4e758946d66ff51c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}