{
  "manageEntity": {
    "action": "Save",
    "entityId": "953144152",
    "entityType": "Track",
    "nonce": "0x07f1ae7e13def274b8fcc56bd125c35d77e7377ddf5af12b364dfb1851ed3437",
    "signature": "0xed3d3289b872f7898d42cdc430786e67fa9bcc7a3796e3e563826c781ff04cd077a49bffde5efc4e11162fe3ba806b9cd66d810bb6ebe619c3b0b0a8128debd41c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}