{
  "manageEntity": {
    "action": "Save",
    "entityId": "276480",
    "entityType": "Track",
    "nonce": "0xd51ab162b9c81c3e5d0519937d1a0592cc528d9d10892c8c7db682a3336881c5",
    "signature": "0x892211ab3a3c9a2367dc86b105d8fcb1c1b5e3007b01561067bc96080fe4babd1c46caba91d5d49d5c7cce8f648a107ce6d49738d706ff763613a512db889c261c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}