{
  "manageEntity": {
    "action": "Save",
    "entityId": "1163140816",
    "entityType": "Track",
    "nonce": "0xcb70098e645a38405fc70b892532dfaacfd6f24d5b5ac0327e97ed5fc95b5f94",
    "signature": "0x464a24fece22c48a0c9425c3b0f5f0351911896f32c934acd268d29bc608111e1cbc40a59cf9100c8f50998aa1167ff195dbde3f6c2084fbe5bc4ba91d9b664f1b",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}