{
  "manageEntity": {
    "action": "Save",
    "entityId": "271731053",
    "entityType": "Track",
    "nonce": "0x1f7f34c30eb0c0fa1831e1f86e8513220afb3f4b3ad0e93eff2e4dfa55db2225",
    "signature": "0x6d953fce07cc619ceb3f90ed8b0313f6fb3eb7d98057557f79c2c9d496f084862b5132b1ffc1d4bc9097288181712338813ed291f2658559b7076ff69c19bc0c1b",
    "signer": "0x90CBf7c9BBF688fd9Fa4029B96e1BC32b270cA24",
    "userId": "711459379"
  }
}