{
  "manageEntity": {
    "action": "Save",
    "entityId": "1982911455",
    "entityType": "Track",
    "nonce": "0x0b1a1ebe9f16b4e634d344083bc06351056e576bb1956c36f6b9c61e022083cf",
    "signature": "0x03def92c18854fc3bed4ac702d68d05a7eecbff00162913a2f1da56cbc7d9824709e42bf5a6b07143b2cc3131c463aca2298e97eeb1e413fce03b6de8d0a7f861c",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}