{
  "manageEntity": {
    "action": "Save",
    "entityId": "1946159863",
    "entityType": "Track",
    "nonce": "0x0263c1624db6436ee98b2aeb1e62ac7bab205fcb1ccca13d8ad8bef6b09bb924",
    "signature": "0x5cae267931b14adaeaec310b33207a540526f70b1f5e5321dbef32f71d4b51a479327bb35339ec0ac75a30a33bf03c1915b1bd1fb9acb562908bfdd43d6d81111c",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}