{
  "manageEntity": {
    "action": "Save",
    "entityId": "175786",
    "entityType": "Track",
    "nonce": "0x8871c0091a28459e6011b64fcf39155f96e7fe3634534f0da45f0b6f027c5f3b",
    "signature": "0xf26e8f8649e70089ab18697e49c35ec003fe515a8a6e60e718f2ddca8b1abbb3175d964f4cf82a5b913c3d2085f2eb83ff15a29146268a108236474052c09b9a1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}