{
  "manageEntity": {
    "action": "Save",
    "entityId": "2086216172",
    "entityType": "Track",
    "nonce": "0x1bdb5a4777dfc37e032227e1ccef0f9e51655832d61c267384ceb2a1688a170a",
    "signature": "0x243bdb7e68d41c103eb541a7df675322ebc88a83da3da709ea2a0130f10e59410123317aac2fce4149d67687d8437b1c32f7f3b132654d52ab00950dd933fdf91b",
    "signer": "0xBBBE9eFc177a4E708d317195Fa81aA6E8E2F7E92",
    "userId": "557135181"
  }
}