{
  "manageEntity": {
    "action": "Save",
    "entityId": "2021095621",
    "entityType": "Track",
    "nonce": "0xeff6e2036caee10401a76feccabd7c6d3ef75d34f6f9fe7a49cc89f898f7f01b",
    "signature": "0x049bf221c4796c5bf92adfd142fbd7c9a7bfc9a0f3b55458ae38b4a762d4a4f44f9ea8157447273fb5c91a40ecb2a4122f56f7344b8a1b0b7f94e9e71961052d1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}