{
  "manageEntity": {
    "action": "Save",
    "entityId": "997828208",
    "entityType": "Track",
    "nonce": "0x2f620d26d9fb4daa8bb7af8a0264641db3e26e5b6ecd2250d100a2583b8e9b6d",
    "signature": "0xd51be5530b071dc8e3ee5d6e7e10392732a4058ed9afa816a14b6e5c91a21c812e8f03ba7682282d2a66d010e9023b8aad4f643aa494ded08934656fcaa3def71b",
    "signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
    "userId": "489165782"
  }
}