{
  "manageEntity": {
    "action": "Save",
    "entityId": "2007546340",
    "entityType": "Track",
    "nonce": "0xfe71c943df507be36b21c32a86b1a9301a06708a58fe8c6ba5924bb9b3da3247",
    "signature": "0x669c8e1a3ccda52c064cbc5f48ea52d0d0ab7cd32c459be46642d47ddfd0e8f05e2d9891f2284addb526690983bf133d28ec4d44e0b63b552cbd630079e824351c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}