{
  "manageEntity": {
    "action": "Save",
    "entityId": "929006",
    "entityType": "Track",
    "nonce": "0x2b4487afa5e73befb0184cda4e963c5a4c39c832ad82e051b839b6c6edb252f3",
    "signature": "0xc1825199dc82833969b3dc180e3b5cbf0b8f0ba53f2aaa63b69995d864a25a0529f32856a852ce688ebbcfe0edc29df62ec9188dee63f57463e7add94bcb4cfe1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}