{
  "manageEntity": {
    "action": "Save",
    "entityId": "1461009982",
    "entityType": "Track",
    "nonce": "0xf206198231c1970e5b972ca69b51de2789d57ef3da043ee5db24b69685b7a882",
    "signature": "0xb18eb38480d327106235f7fd3a1aa66e1c6e41775c001d402aa6ec40dcf275e178368b348b6c042ec298289075ca51f8d000b0c2ba48f1a0eb1eab10e80226e31c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}