{
  "manageEntity": {
    "action": "Save",
    "entityId": "1897531810",
    "entityType": "Track",
    "nonce": "0x05ba29a8beefd3c739570b9325f0ff2bad54cb20bd2f3a391571a0c6defa4bc9",
    "signature": "0x62692ac10fb667ef4d10996b1d5e0687e124be486390b67595ef0a8cca8e631e1c950a8f0773016ed06f2034f9d70dd8fb9dc03512f192ff9d023983bf036dad1c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}