{
  "manageEntity": {
    "action": "Save",
    "entityId": "1793464161",
    "entityType": "Track",
    "nonce": "0xf62085db9946a3f2d4e95a6f9658f26e834cdaeec5fe1b639b965b2e398c17f6",
    "signature": "0xdd598eb9168215089c821873c2bbfefb5853eb4d61c4d9ab87920dbc550b1fb82ca68a962f4123c3dfd4419aa639a2d3f2b991fd3eeb6ef04a8184a511c4b6081b",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}