{
  "manageEntity": {
    "action": "Save",
    "entityId": "1008594354",
    "entityType": "Track",
    "nonce": "0x5a969c1a5774115b707085c63bbbb5faf37d92284feb6e2e777bdb9ec768b0e3",
    "signature": "0xce75f02eecbe2afcae88ccf37f10488d4b12d3494ef90fa782cb1c3321a857766e1ce4878c856f94f8a6afba15da2b53f66058e589eff5e8d01f3b6f6561ecb31b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}