{
  "manageEntity": {
    "action": "Save",
    "entityId": "864010746",
    "entityType": "Track",
    "nonce": "0xdbbb06bf338470f99b3cd17175679430c67d5d7ec86827a4b6fc5d2663c1a456",
    "signature": "0x6f0f89fef1ddba16ad03c528eb5561317496247f3d322e3c87819def5e412e33448f1d2a34b7780a001228df275a824f27b351ceec8877c4836d997a3e3425d41b",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}