{
  "manageEntity": {
    "action": "Save",
    "entityId": "2114632892",
    "entityType": "Track",
    "nonce": "0xb9a6f332112a05c963a7aeeea669d7660b9ee679806adfddaa173792853f88ea",
    "signature": "0x12fe9285f26d75aa78411447c8b15a8b39a11cfc1f5591943e71cd15407502a700a2a082e0360cea3a4355a87d22b8594a78716e0584bd52b6fc510da6056ee81c",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}