{
  "manageEntity": {
    "action": "Save",
    "entityId": "1081044148",
    "entityType": "Track",
    "nonce": "0xd95f0c1c82686f5a4cb61438652ef55c48edc592b88a8a76c88d4932fd55a6b2",
    "signature": "0xe2e91cdaf09f66e85e0048919b80c6ffbc112e8d0bcb6ace566487511e879b3a3e3e4365ac32e3f8fdbb6570361bc2af0f56d3aa4a7f72b252b76c772d3a71461c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}