{
  "manageEntity": {
    "action": "Save",
    "entityId": "1359260913",
    "entityType": "Track",
    "nonce": "0x6540e8241bc4f4d2f264852e3ece006a31d9c143323daa277636cb4a1799f0a7",
    "signature": "0xbc96b8736d2909377ea88ae8243d687f911e5f0b2090b70c538d3b061b0e8f40241f875065508bd5a7c332fe4cd4c292a5039b18a81f34e0fbc307eb900ac5e81b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}