{
  "manageEntity": {
    "action": "Save",
    "entityId": "1926233481",
    "entityType": "Track",
    "nonce": "0x35825368b861f96660b535736899d0b0b16880d3def679ea4787308bf245c252",
    "signature": "0xb021e69431b7566e1c6ab9fbbdea7fae92d6227b796347878fcdfee21704adf73350844b770b68c4e1b5847582f94df8b614b9ccea66d14307531b182ea1d6521b",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}