{
  "manageEntity": {
    "action": "Save",
    "entityId": "1922452732",
    "entityType": "Track",
    "nonce": "0xb2a14f602f7f7e45f31102c939c725250ec3503fb8f694333341c7575beb8f9f",
    "signature": "0x029de07d78b0cea24ec915ae88ccb08318e08528142a1f0a56e3064e16b0a40579bf7a14f00217b2ca9e46fae8c083a69551e6c50b1a0d291e507a2bae70fdc31b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}