{
  "manageEntity": {
    "action": "Save",
    "entityId": "317768521",
    "entityType": "Track",
    "nonce": "0xa8a689be1987ad9e13d07b7043133f5227d210a110901107ee39ee29892f23bc",
    "signature": "0xd9b51c61f538a3004925f4dfd5264b2447e4f7dd9d8c8ad696dcfb2e61c6bfa22fa9be6dc42cf19efea9dd99d80ad7da011fa89555171c32e9bd10c2158274611c",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}