{
  "manageEntity": {
    "action": "Save",
    "entityId": "1036470589",
    "entityType": "Track",
    "nonce": "0xd95669e448f0d2349b43cdc1a517bf97da08cd9ccd84d733f8120b4be5e177f5",
    "signature": "0xdc0310b3fa093902138bc9c88ef9fc9244e9b1ef7a77bc817bb7f365d918c3bc39583a79986509565afefe3af9d55f8085919a1fecdf9ac03d03b7c5bf98cf121c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}