{
  "manageEntity": {
    "action": "Save",
    "entityId": "2094176363",
    "entityType": "Track",
    "nonce": "0xaa643dce9b3cf059e4e4db80f1b2255b450658d0a2050c57e7057e9e6fc6af07",
    "signature": "0x82a8455dcda84cf05a522e768e4cc0ef4ec3f3e6cd122a5f8fdc0967c8d60b685f267beaa7b6e1f2dbf58f2bffe8aab8e08dca6a64b5e7e8d8653b2f732a9e091b",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}