{
  "manageEntity": {
    "action": "Save",
    "entityId": "1345238911",
    "entityType": "Track",
    "nonce": "0x5b579c6ebb62acba2a3b61761b63ca904433988d007631ee79cd6789fcf1d63c",
    "signature": "0x4dd4af78026839b8f234d64bd6b7aae4a55c374587d954e485d2e8b725a153605262a7c102f3f7c4c4264a824ab2bda8412493fec1befea1de9c15727dd1ab051b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}