{
  "manageEntity": {
    "action": "Save",
    "entityId": "1019181",
    "entityType": "Track",
    "nonce": "0x5441e26298932817e4430ce963d73b79470088ab7d161e1a078f65a639acdecc",
    "signature": "0xda96bd48fe2f06d55002eaabdd5867311a73ec9e97bb0f77b7a692fa42f165f32292a4b83f5f26a59d70f2f302f18f89b29eb61d955eca85d90e7c9bc13facfe1c",
    "signer": "0x0A1cf3c6988D8FF12dD0752627fD6702e9a27c7f",
    "userId": "40636107"
  }
}