{
  "manageEntity": {
    "action": "Save",
    "entityId": "1173148119",
    "entityType": "Track",
    "nonce": "0xa72170ea8a793630c87fe47a3694db439bf9c65415291f357ceebe208bf6e349",
    "signature": "0x51718e5ed414a5a73f6ca53fa362433ef046fad91e7faa309af331299d90a65e45d6b1c58b3dac95868abb36d6859562d34b7fc58f79ebf221ab9b6b3ae4ee441c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}