{
  "manageEntity": {
    "action": "Save",
    "entityId": "1027546795",
    "entityType": "Track",
    "nonce": "0x1101cc6dd21009905d00365247bc7a0e7f9626441f81c887bd013f570d5ed87c",
    "signature": "0x84f603c3e1ce392164cd70ed3d9d6af3239cb16103069e046c1a1dbf4c31c4ba7ca49c5f47eb9e5707f3f3bceb30f075444acb5b27df5e1d3f24191063527f941c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}