{
  "manageEntity": {
    "action": "Save",
    "entityId": "794228575",
    "entityType": "Track",
    "nonce": "0x0097f05832b2a92a60cdaa329444dd545c58a6ee1bda091917b588e8bb569cd7",
    "signature": "0x4f28244a9775dc95af06790944479cf22abd56f32aea26815a971334f9677a5c327d40e66cdf4ae737e031f47ffcad59dd381568cb706a0e97a6cef8664846301c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}