{
  "manageEntity": {
    "action": "Save",
    "entityId": "361403996",
    "entityType": "Track",
    "nonce": "0x84c1938c92e83a0709de2e5ad7f94c74eac75841885bbc0272ce2cf46aa552dc",
    "signature": "0x0aedb131732fe41a5977d8853e4503319aaeaf48c961a5cdb56cdb0c23aa95b10352a1809b62767f41909aefe6276934afb845a0d442cbdfeb6b92f372292b141b",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}