{
  "manageEntity": {
    "action": "Save",
    "entityId": "46435825",
    "entityType": "Track",
    "nonce": "0xf427ee6d5411a7b5a872a664d851bf6b5a49809f53ac37a60183a029459179c2",
    "signature": "0xcd16482425de8f848596ab9775505e5615cb267c3ed98ed8be1dfb5690b4838d72f7a062bae39feb3a3afdbce7591d71f89cc416802ab048aaf8c48081ab81751c",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}