{
  "manageEntity": {
    "action": "Save",
    "entityId": "1276261347",
    "entityType": "Track",
    "nonce": "0xe31fd49ddf38bdf5e92c939c6bf9895c258b910b2e76d246af5324453600ee44",
    "signature": "0x8c2bd13b933c37d5aa450eaf6d13609529d018b22dd018e8c967c2f65d63ed215f3f15e49012063aa6f1b1ce1d1aca0715139672c490aed52fc3fca7e24540911b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}