{
  "manageEntity": {
    "action": "Save",
    "entityId": "1061288719",
    "entityType": "Track",
    "nonce": "0xf0aecb00abbc1e8bb19f098a51b22d9546c0a344e6effc538b9a88434a7c0b6d",
    "signature": "0x20d9190f2d651f0d691c944b5f640944fe7c612cf84b19ba3a61382092e0f82e0cc9f2d53f563b393c55262592616e2b314f88c51d45ca098bf1b0b6778fcc3a1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}