{
  "manageEntity": {
    "action": "Save",
    "entityId": "97819",
    "entityType": "Track",
    "nonce": "0x5362f22c8df3816bce4201947eddced7a442a0cbfd975c473269c0ba92c62175",
    "signature": "0x07a452477350715d56ca3d9435bb07c53c4b6ec6d0dbce15617f61f955731ef3122ff4f78d7cf3b9efde1452ecc141aea1805dd95828830bcfaec3fa29b5a8641b",
    "signer": "0x530FAbE17DCf39F21fF28C09C454943CE483816D",
    "userId": "140097"
  }
}