{
  "manageEntity": {
    "action": "Save",
    "entityId": "1475203090",
    "entityType": "Track",
    "nonce": "0x18800ac86d49388f4b2a8ff4b3c11c8f82d3ca638a6903279da441257351ba21",
    "signature": "0x23f275b482c31479128eac74cb88749ab8173b56f3a1bca66f2d5f5433137ac86e7a9dec1cab6302671b8ffb005ddda1064aad093079838bad202e1d415e67061b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}