{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "778660480",
    "entityType": "Track",
    "nonce": "0x0ebdade02c6ef774e487f708e4f6b68fd0ef818fecd46537134e197ea2116e67",
    "signature": "0x3629490a9d2d7597e4c700d5df630d3d0f0072cdb95479d07bd40f3ebe630a77319ded8fea160319149bf7135e81d15298d3da2cd943eafbaed25b19c3d19cfa1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}