{
  "manageEntity": {
    "action": "Save",
    "entityId": "1530627932",
    "entityType": "Track",
    "nonce": "0x7caa1de1a88bf815f754d24891a49d80f084ad5aba2b0ac34574c423f5f386a2",
    "signature": "0x64133f691cedd8ef29a85cee599a3b03910d710ec7cd458279b72ced0a20472767045858eb476723579837d954228f5b071f6597ccc3876920bb889132e290501c",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}